cat3. 6'3.5" 190 lbs... used to be a sprinter... and a powerlifter...

I find that bar choice/stem choice/wheel choice and bike choice make a big difference to me.

My 60cm Aluminum Cannondale with 300gram aluminum bars is rock solid, even with a 140 stem.

My 62cm carbon Trek is noticable less solid with lighter bars (same 31.8 sizing).

My steel frame, quill stem, 26.0 bar 1983 fixed gear is WAY flexier. not a surprise.

-L "carbon bars suck" D