I have several old Schwinns made from True Temper and low end Columbus tubes at their Grenville Miss plant. Can't tell the difference between them. I also have a Waterford with 531 and another with 753. You can sure tell the difference when riding the 753 bike. The 1200 with 753 is the stiffest bike I own. For me it's instant power transfer. The ride isn't reall bad though. My brother's Trek 1200 is much lighter and much stiffer. Actually, the Trek really beats you up in longer rides.

Tim