While the 210 motor goes slower than I normally pedal (15 on mtb on dirt path, 20 on road bike),
The 320rpm motor feels like a different beast. The slow motor is lazy and relaxed, like riding a 2 wheeled golf cart. The 320 motor is a speed demond. It likes to go 25mph where the slow motor likes to go 16mph. Big difference. I think for many people something in the middle would be nice, but Cute doesn't offer that. I did see a little Bafang on GreenBikeKit that was 260rpm. That might be nice for some people.

While my initial impression is that the 320 motor fits very nice on a 700c wheel, with the important caveats:

• Only use the motor above 15mph
• no sustained hills
• rider willing to help out with the pedaling to sustain 20-25mph pace

I need to do some experimenting, but the 320 motor looks to be a nice solution for a fast rider who is willing to do some good pedaling.

Attached thumbnail shows the 201 motor riding at 15mph, and the 320 motor (road bike) riding at 25mph