Originally Posted by Maytag Repairman
The TMAX sits further back and didn't appear to have any adjustment.
The TMAX has three settings. If you pop open the seat there are 2 screws that are accessible from underneath. You unscrew them, move the stopper and rescrew it in. Not the best design but you probably will never move it after you get it where you want it. That said, the furthest back may still not be back enough for you or it may be something that you love after riding it for 500 miles. You could also get a corbin seat for probably any of the scooters you looked at.
I don't think you can go wrong with any of them.