I am looking to upgrade the frame on my current ride, and am in need of people's opinions. I am currently debating between the Schwinn Madison frame, Pake Track frame, and the Mercier Kilo TT frame (from bike island). I believe they are all made out of the same CroMoly 4130 (reynolds 520) double butted, etc. But my question is if anyone knows if either of them is made better to support a heavy rider? I am 6'2" and 220lbs so I don't want the bike to buckle under my fat butt. Any info/opinions would be great.