Currently riding an 2003 full DA with Kysrium Elites and Pro Race tires. I think I have found perfection! I'm basically a club rider who does a few local crits. Coming off a full aluminum ride, the carbon fork and seat stays make for a plush ride. I did replace the Thompson seatpost with a carbon FSA which makes for an even more comfy ride. I've put probably 2k miles on it and have encountered no problems. Only thing I've seen on another bike (heavily riden by a pro) was the magnesium ends of the carbon fork started to delaminate, but it was fully covered by Klein.