I'm somewhat of a newbie bike rider and just want to know what people ride as far as frame size. I curently ride a Trek 7200 with a 22.5 inch frame. At first I thought the bike was too big for me but now it feels comfortable. I can't raise the seat much and have about an inch of clearance over the cross bar. I'm 6 feet tall with a 33-34 inch inseam. I want to upgrade to a Trek 7.5 FX and am unsure about whether to get a 20 or 22.5 inch frame. Is there a recommended frame size for somebody with my hight/inseam or is it more a personal preference?