fwiw, my g/f ran a Sargent on her 11S when they first came out in 2003. a year later she sold it, and replaced it with a custom Rick Mayer. The Sargent was good for her, but the RM is better. She ran both seats in 2 different IB Rallys (the BIG ones!)
Rick Mayer's, red leather. Extra thin at the "nose" for her 5'3" stature:
ymmv, but every Sargent i've tried feels like lesser quality/comfort than the RM.