I think they listed in wrong order. 700 (29er) is bigger than 28'' . Cruiser...go for it! What a great idea, you will love it! They send me also the battery and it has been great so far, no problems. With the 10Ah and practical driving you can drive easily over 40km distance. The avg speed will be like 25...30km/h. Every time I have had max speed about 48...50km/h but it was because of the downhills.
I did choose the GM kit because of the internal controller and easy connections. I also liked kind of the clean "stealth" look of the bike. I know you can't hide the monster MP3
If you choose the GM kit, please do following modifications (you have to!):
- Use thread locking fluid for spokes (no more loose spokes, that's for sure!). Easy job to do...
- Make better water protection (use silicone, I used the same what is used in the car industry). The most important is the protect the "cable in" to the hub. Because of the Chinese quality issues you don't know that the assembly of the hub is correct! Like I had missing o-ring and water leak.
- use torque arms in the aluminum frame!
- consider tweaking the software parameters like torque limiting and brake parameters (good USB sw interface in the GM kits )