I used wave 125i for a while now, sometimes 100km daily since just restarted going to office and my other ride needs some servicing.

Pros, fuel efficiency and a scooter with gears.

The cons are it is a bit slow if standard sprocket no porting (lol), and the stock side mirrors made it a bit wider than others.

Vibration i am not sure since i expect single cylinder bike to always have it. Mayb need some dampener at handle if it helps but i am no expert in this.