I posted the following Soltera 7 review on Aventon's site, thought I would share here also.
Pros:
Very well packed, no shipping issues
Seems to be a quality build, decent fit/finish
Customer service seems empowered to solve problems
There are some local dealers that stock / sell parts
App is a nice extra
Solid, smooth ride, gives confidence
Low rolling resistance tires improve efficiency
Seat seems comfortable even on a long ride
700x35 tires absorb bumps better than expected (compared to road bikes)
7-speed provides great flexibility, particularly on hills and start/stop, and helps reduce battery demand
Display is large and easy to read (I can read it fine in the sun with sunglasses on)
Motor gives 100% right down to single digits of battery left (doesn't go into power-save/reduced mode like some other brands). When you have some big hills in your last miles of ride, this is important!
Cons:
No provision for a water bottle holder, even on the seat tube.
No ability for lights to blink/pulse for increased safety.
No ability to set a PIN for theft deterrence.
Cable management could be better, there is a huge morass of cables in front of the handlebars. Eventually figured out to put the cables behind the headlight, but it's still pretty ugly.
Handgrips do not provide enough cushion, hands fall asleep on longer rides.
Headlight would not stay in place, had to add washers to make it tight.
Other:
Hypermiling approaches seem to work well on this model, range can be significantly increased by going to PAS 0 where possible.