Originally Posted by Clang

The Trek 730 is from 1997 and it's much too small for you (it's too small for me and I'm your height), so don't buy it. The Schwinn Knowles and Schwinn Ranger are both department store bikes. Do not buy them used.

I understand it's frustrating to have to wait for something specific like a hybrid your size to pop up on the used market, but it's not worth it to rush out and buy junk or buy a bike that'd be too cramped or too tall.