I bought my girlfriend a ybr a couple of months ago and she loves it.
Having ridden it myself I was pleasantly surprised. It's really light, very easy to handle and build quality looks good too.
I thought going from 160 bhp to 11 might be a bit too much but it keeps up with traffic and is great around town.
Make sure you shop around and buy the best you can as they come in 2 conditions, mint and sh*t order.
The other good thing is they don't look like a little bike.