Being that it was at least a size too big, with a long stem to boot, and on flat, plastic pedals, I only rode it up the hill outside the dealership and down. I HATE big frames! Anywho, I didn't notice anything different than my SL3 ride quality-wise, and I didn't pay attention to BB stiffness because I'm sure those pedals flex more than the BB ever would, I was mainly focused on the front end. I was standing and cranking up a hill, and I swear the whole front end felt like one solid piece. No flex, no chatter going downhill (although it was straight, so I can't comment on handling), and when they get one in my size, I'll try for a real ride. The manager there likes me a lot, so it should be no big deal (I'd actually love a job there... but I've never been able to get hired at a shop...)