So im a pretty big rider (just got down to 190lbs), and im looking to upgrade the wheelset on my 2008 trek 2.3 (aka the goat)... Both of these sets seem like a great deal, and I think ill be able too stay around this weight for a while.. I was just wondering if anyone had anything to say about which set would roll smoother and be the stiffest? The prolites are about $100 cheaper and weight about 50 grams less but im a little concerned about flexing?... (max rider weight on the prolites is 200lbs vs 225lbs for the williams) I currently run bontrager race wheels (i think around 1900 grms), so either one will be an upgrade... As I said im a bit heavy, and I ride up steep windy mountains quite often.. Most rides ill be doing on the bike are around 70 to 100 mi and include a bit of rocky or rough road. Ive learned quite a bit from this forum, and was hoping to get a few opinions on durabillity relia illity and smooth rollin. Thanks!!