Originally Posted by Rusty

How much do you want to pay for a MT bike?

Frame size is based on how tall you are. Stand over the bike. On a MT, there should be about 4" between the crossbar and your crotch. Road bike 2".

I have a Trek 990 MT bike. It's an older cro-moly frame. The ride is between the flexy Ti frame and the stiff aluminum frame. Carbon frame are a different animal. They can be anything from flexy to down right super stiff. The other thing is tire size. 26" or the new 29".