I was looking at the new GC 610s for my Pro-Tour, but couldn't get past the price. They cost more than I paid for the frame! I put on an old pair of mushy-feeling Weinmann 610s, until a pair of used old GC 610s came up on eBay for 10 bucks. Although to all appearances they look exactly like the Weinmann's, the difference in performance with the GC 610s is tremendous. They don't look to shabby either.