I went with the 7s over the 8s for the following reasons:
- Cheaper; I too was already stretching my budget on this at over $4K plus taxes
- Included the suspension fork
- Rear rack can mount a trunk bag
- Wanted a more simple head unit with the Purion. I have a iPhone XS Max and the Cobi didn’t fit with my case. Figured the more complicated Cobi was more prone to bugginess and screams ebik
Things I wish the 7s had:
- Of course the larger battery, but I’m not regretting too much given I ride no more than 50 miles in mixed modes. I can always add the external if I need longer distances. But come on Trek, I’m already paying more for the 7s, why not throw in the larger battery?
- The 10 speed deore. Again, come on Trek. It feels like highway robbery
With the price difference between the 8s, I’ve upgraded with the following:
- Kinekt 2.1. A suspension seatpost I think is a must have. Do your bum a favor.
- Spurcycle bell; come on Trek that included bell is just cheap on a $4K bike
- Trunk bag from amazon. I can’t seem to find any of the racktime bags in stock in the states
- Foldy lock; you’re spending thousands on a bike. Don’t go cheap on the lock if you have to lock it up for a short while. I do not recommend leaving it out overnight. I would avoid leaving the bike out of sight if at all possible
- Pending: The Bontrager grips makes my hands numb on long rides. I think I will have to upgrade the grips to Ergons.
So I think we often forget that the cost after purchasing the bike is not over when we bring the bike home. Don’t forget a good helmet and other upgrades like pedals etc. I also have a set of removable front and rear lights. I avoid using the included lights since they draw quite a bit of power. The included lights are nice when it is really dark and you need some extra lighting.
One sort of regret, but also not, and an area to improve:
- Regardless of the 7s or 8s, we're talking about the GEN4 Bosch performance speed motor. The thing is POWERFUL. Love the firmware upgrade that unlocks 85nm. The bike speeds up hills on Turbo. But because I ride alot at the beach, the motor whirs/buzzes quite noticeably. I can see if the bike is used mainly for commuting (which is the design intent), then the motor noise won't matter since the car noises will be way louder. So take this into consideration if you plan to ride alot near other folks and don't want to draw attention or you are bothered by the motor noise. This is my first ebike, so I don't have alot of experience with other motors. But I see other ebikes on the beach and the rear mounted wheel motors and others don't make as much noise as this $4K bike. Just be aware and consider this in your purchase decision.
If you have the funds for the 8s and also factored in the extras, and minor design differences between the 7 and 8 suits you, then go for it.
Hope this helps.