I'll tell you I had great success with my Bontrager R3's in 25mm. Had two sets each lasted well over 1500 miles and only 200g each. I just replaced with Conti 4000s series II in 23mm just to try something nee. They seem nice but kind of wishing I had gone 25mm which just seemed a little more comfy. Going to play with pressure on the 23's to see if it helps