Love my Sugoi Rs Bibs with the formula fx chamois. This is the only bib I have ever owned that I never have to adjust the chamois while riding even on a 50-60 mile ride. they do run tight but I think that contributes to the chamois staying in place . My only complaint is the material on one of my pairs is piling or fraying a little where it rubs the saddle. I just got a pair of 2008's. some of the materials seem slightly different leg grippers and stitching, both better. so hopefully they will hold up a little longer. still my favorite bib shorts.