I'm not actually getting into the sport, but I was looking for a good second bike that wil absorb a lot of road miles as well as me, 6'3" 240#. Due to my girth as well as my penchant for running over things, I have ruled out a roadie. I recently discovered cyclocross bikes and they look like a decent cross between a roadie and a mtn bike.
I'm not looking to spend a bunch and I have seen a few deals for used bikes online, specifically a used Trek X01 and a used Haro CXR. Are either of these good bikes used in the $500-$550 range?