Just my opinion...
I bought one over a year ago for my G/F, and though it tops out at 28 on the flat with her 150lb frame, it does the same with my (then) 300lb tankness.
It starts every time, even with a dead (or no) battery, has never needed anything, and I use it to get groceries.
The only issue is that on the shoulder, you feel quite vulnerable when people pass at 65mph...I've commuted the 13 miles to work when my 750 was in the shop, and still think the most fun I have per mile is had on this thing.
Sure it's small.
That's the point.