I'm an over-pronator -- nearly flat feet -- but a lightweight guy, 130-35 pounds, and these shoes work just fine for me: I don't need the added weight & expense of motion-control shoes. I've had several pairs of the GT-1000 line and I alternate wearing them with the Mizuno Wave Inspires, which also work very well. (I.e., at any given time I have an older pair of one & a newer pair of the other, switching back and forth every run or two.) As noted, the GT-1000s fit a leetle on the large side. However for running shoes, that's better than a bit too small, and I can adjust by wearing slightly thicker socks with these if desired. Another fit factor is, I have a narrow heel, and these shoes fit snugly in the back with no lifting out of them: that's one place where you want a nice close fit. Otherwise it's a very good shoe -- so if it fits, wear it!