Originally Posted by
JohnDThompson
710 and 910 are the same frame except for the tubing. You'd be hard-pressed to find any difference in ride quality.
I know the above, but since the actual expert is here: My 910 is a 25.5", which I had read was Columbus SP instead of the regular specced SL. We're the tubesets that Trek used for the largest sizes of 510s and 710s also thicker Ishiwata or 531 (or longer butts, etc)?
I can definitely see that the middle sizes of 510, 710, 910 would have very few perceptible ride differences, I wonder if that's true at the extreme sizes. Unless maybe 25.5" 510s used Ishiwata 025, for example.