These shoes are fantastic.  I bought them primarily for P90X plyometrics workouts rather than running.  They fit the bill perfectly -- so comfortable and "springy."  I can also wear them all day as casual walking shoes and they are not only stylish for that purpose but extremely comfortable.

The only caveat may be that if you're hard on them they may not be as durable as you'd like.  I somehow broke off one of the rubber "nodules" (for lack of a better word) on the bottom of a previous pair of these, probably hitting the shoe hard on a sharp rock or something while doing some rock-scrambling while hiking.  Now admittedly these are not hiking shoes/boots, but I was still surprised to see a big piece of rubber missing from the bottom afterward.)  But these shoes are so good that I didn't switch to another brand; I just figured that that was a freak occurrence and bought a new pair.

Really nice shoes and worth the money.