I have his/her Radrovers since Sept/16 with around 3800 miles between them. I went with the Rad because the seating position was more upright and the handlebars were not as wide compared to the Volt Yukon 750. I work commute with a backpack 3-4 times a week and I didn't want extra stress on my back/shoulders/arms from leaning forward too much. It was just Volt, Rad, and Sondors at time I was looking. I don't know how newer Fat tire bikes compare in riding position. There is always a better bike on paper; but, the Radrover seemed to check more of my boxes for the type of riding I do in my neck of the woods in the southwest at a very affordable price of $1500.
I'm also 6'3" and I added an 0-60 degree adjustable stem to raise the handlebars up and a little back for an even more upright riding position. Very comfy for trail riding and 18-20 mph work commuting with front suspension, fat tires, Cloud-9 11.5X12.5 cruiser seat, and Suntour NCX SP-12 suspension seatpost. Fat or Plus size tires are very nice if you have to traverse a lot of different terrain in a single ride like paved roads with potholes up to 20 mph, uneven sidewalks, hard packed trails, pockmarked/washboard trails, gravel/sandy/muddy/rocky trails, and over small obstacles.
The 2018 Radrovers now have upgraded handlebars you can adjust alone with a brighter headlight, larger battery capacity, more responsive PAS, and mounts for a front basket. You might not need to add the adjustable stem to find a comfortable riding position. Another reason I picked the Rad was I liked the ability to use the throttle to apply the full 750w of power in any PAS level (even in PAS 0). Having full throttle power comes in handy:
- trail riding and you hit a sandy spot
- short inclines if you just need to a touch more power to maintain your mph
- if you need to push the bike up hills or over obstacles (I even used the throttle to help push my ebike up a flight of stairs)
- getting across intersections in a hurry
- using the throttle if pedaling would hit the ground or obstacles
- helps to get going if you are starting up an incline
- less shifting required to get up to cruising speed
- can get up to your cruising speed faster using the throttle and shifting