I'm past due on some comparisons between my Trek Allant 9.9s and the Vado SL 5.0. I have about 1K miles on the former and 500 miles on the latter. They are very different bikes although both fit into the categories of urban, commuter, fitness. While both are capable of some excellent range, I wouldn't classify either as good touring bikes because of their limited cargo capacity (light capacity rear racks).
Just to recap the mods:
Allant 9.9s
Baramind Trek handlebar,
Crank Brothers Stamp 7 pedals,
Kiox display (removed Cobi),
Whisky #9 carbon rims, Onyx rear hub,
SRAM AXS drivetrain,
Tannus tire liners,
Kinekt carbon seatpost/suspension,
Supernova M99 mini pro 45 headlamp
Vado SL 5.0
Salsa Rustler carbon handlebar (cut to same length at stock handlebar),
Ergon SM Pro saddle, Ergon GA3 grips,
Thudbuster ST (latest edition) seatpost,
Crankbrother Stamp 7 pedals,
Schwalbe Marathon e-plus tires
Comfort and ride quality: Heavily in favor of the Allant but I think it has way more to due with my customization and less to do with the inherent qualities of the bikes:
I've spent more time and money on customizing the Allant and it, therefore, is much more comfortable at this juncture. It would probably be the more comfortable bike with the stock set-ups just due to the 2.4" vs 38mm tires. My set-up on the Allant is so comfortable that I haven't found the need to change either the stock saddle or the stock grips (and I still have the stock tires). The Bontrager saddle retails for $45 vs the Ergon saddle I upgraded to on the Vado SL which was around $100. I've found that saddle comfort often has more to do with ride position. The ride position on the Vado SL feels really good but I get sore sit-bones and sore hands on a 20 mile ride. My max distance on the Allant was 40 miles and I had no discomfort. Next Spring, I'll focus more on improving the ride quality of the Vado SL. I know I have options to adjust reach, change the tension of the Specialized stem suspension, change the saddle again, and if I really feel like spending money, upgrade the rims. I feel the Allant is dialed-in and I don't have any further upgrades in mind.
The Schwalbe Marathon e-plus tires on the Vado SL give me the peace of mind that flats will be rare. But they do offer a harder ride vs the stock tires. I feel pretty secure cornering and they seem to handle wet pavement well enough. I've taken the bike on some gravel roads and I was really impressed with the handling of the Schwalbe Marathons. I kept the stock tires on the Trek and added the Tannus liners. I get a nice suspension-effect and I'm not sure if it is due to the Tannus liners, the carbon rims, the Baramind bar or rather the combination. I have had one flat on the Trek and that seemed to be a very small diameter finishing nail that made its way through the Tannus liners on the rear tire. The tire never went fully flat and after I discovered the nail and inflated the tire, it held air for 3 days (not being ridden).
Obviously weight and the ability to carry the bike up stairs or lift onto a car rack is heavily in the favor of the Vado SL. Having a removable battery is a plus for the Allant (ie I can leave the bike out in the cold and bring the battery inside).
Range: Really hard to say which is better since I haven't done a true test. I've extrapolated 15-25 mile rides to ranges on the Specialized well over 100 miles using the range extender battery (so a total of 480 wh). But with a slower average speed vs my Allant rides and with me doing more of the work. That is really the design intent of the bike but I do feel like the motor is very efficient and well-tuned and matched to that design intent. With the Allant, my 40 mile ride and some 25-30 milers extrapolate to around 100 miles with two batteries or 1125 wh. I don't know which offers the "best" range but I feel the Specialized, with the ability to customize ride settings and power output, gives the rider better ability to micro-manage and plan range.
Power: Obviously the Trek offers a lot more power. But for me, Sport and Turbo on the Trek are mostly wasted/unused. Again, the ability to tune the power settings is a huge plus with the Specialized.
Other motor characteristics: I feel like the Mahle is probably the smoother motor when delivering assist. I have not had the Specialized over 28 mph so I don't know how smoothly it fades out. I have had the Allant over 30 mph and honestly I can't feel the motor fade or cutout - it is extremely smooth. As for noise: both are definitely audible. I don't know how to compare them given they are delivering completely different levels of torque and power. Perhaps one way would be to create a preset on the Specialized that gets you close to the assist levels of Eco and Tour on the Trek. But then the torque is still 30 nm on the Specialized vs 75 (?) nm on the Trek (I chose not to update the torque with the latest Bosch software update to the 85 nm of torque). So a completely non-scientific, gut-feel opinion is: I think the Mahle at its highest levels of assist is louder than the Bosch at its middle levels of assist. Maybe some future reviews by more technically-gifted reviewers can sort this one out. I have ridden both systems without power and I can't detect any significant drag with either.
User GUI/software: The Kiox is an upgrade in my mind over the Cobi but I realize that is debatable. The Cobi was "allright" but it had nothing to really set it apart. The TCD on the Vado SL is very minimal but extremely easy to use. The real magic for Specialized is in Mission Control and one could use their phone vs the TCD. I prefer to put my phone away in a bag or my jacket and have Mission Control active and tracking the ride. But Mission Control is far and away better than anything Bosch has in terms of its ability to customize power output. This is a really valuable feature particularly for a bike with smaller batteries. Both probably have features I haven't explored yet.
Lighting: the stock lighting - particularly the headlamp is far and away better on the Specialized. The stock headlamp on the Trek was insufficient for commuting in the dark and in my opinion was a big disappointment.
Drivetrain: I didn't stick with the stock drivetrain on the Allant for very long. I think they offer the same drivetrains or very similar (Shimano XT and SLX cassette 12 speeds?). The shifting on the Specialized feels very smooth to me - smoother than what I recall on the Trek but I didn't really have any complaints about the Trek as some others did. The SRAM on the Trek is nice but in terms of upgrades, I probably wouldn't do it again. I feel the dollars spent on upgrading the rims and hub provided more bang for the buck and was a more noticeable upgrade over the stock setup. Whereas the difference between the SRAM and the stock Shimano drivetrain is less noticeable IMO.
LBS: My Trek dealer is far and away better vs the Specialized dealer. Both in terms of customer service and in terms of technical ability to service the bikes.
Problems to date: none with the Specialized (again only 500 miles) and a rear hub failure with the Trek (well-documented in these forums).
At this point, I'd have to sum it up by saying I'm pleased with both bikes. They complement each other nicely. If I were commuting now (I'm not due to Covid), I'd be doing a 2 to 1 ratio likely (Allant 2 days per week and Vado SL 1 day per week). The Vado SL would be my Friday commuter. The Allant gives me a more comfortable ride and allows me to do longer distances. I feel more secure at faster speeds on the Allant. For some of my local rides where I'm just doing a 10 miler to grab a coffee and maybe pick up some carryout, the Vado SL has been the go-to bike. Due to not having to insert and lock-in a battery and its light weight, its just sitting there ready to go and, attracts less attention when locked to a bike rack outside the coffee shop. If I had to choose just one as a commuter I'd go with the Allant. If I had to choose one for longer distance road riding, I'd go with the Allant. If I had to choose just one as a fitness bike, I'd go with the Vado SL. If I had to choose just one as an urban bike wherein I had to carry a bike up stairs I'd go with the Vado SL. If I had to choose just one for leisurely weekend car trips to rail trails or MUPs, I'd go with the Vado SL.
And just as a reminder to what I've stated in another thread previously: If I could only have 1 bike, it would still be the Tern GSD.