I gotta say, i notice a significant difference between my 725 and Jamis in terms of flex and power transfer. But I'm not a small guy, and at this point in the game I'd like to think my legs are decently strong too, other then the Rando feeling like I'm dragging a dead poodle the Sugino 75's feel much better (5mm shorter then my RPM Vero's) Spinning feels better, I can drop down further. I'm 6'2 and 210 on a bad day, around 190 on a good day. I can flex ****, and I climb a lot.