The evolution bibs are about $80 on amazon right now - http://www.amazon.com/Sugoi-Evolutio...goi+bib+shorts

The RS bibs are about $91 - http://www.amazon.com/Sugoi-Mens-Sho...goi+bib+shorts

I've had my RS bibs for 2 months now and I love 'em. The chamois is a little thicker than most of my other shorts but it's also more comfortable on long rides (I have a pair of descente bibs that have a much thicker chamois). I'm 6'2" and the XL fits fine but IMO the shorts are shorter than I'd like - the site reports them as having 8" inseam. 9" would be better IMO.

The lycra is very supportive and I don't seem to have any excessive sweating problems even in 100 degree weather here in SoCal.

What i'd like to know is what's so much better about the RSE bibs that makes them worth $170 or so. Anybody know?