I'm a 15 year scooter commuter all done on a 250. My commute has a maximum posted speed limit of 45mph with traffic flow around 50mph. A 250 is great at 50 but at a sustained 65 I'd look for something bigger. Not that a 250 would not do it, just that it would feel a little frantic day in and day out. Think driving a Geo Metro at 80 everyday.