Okay, so it's time for new trail runners. My Montrail Masochists served me well with 1000+ miles on them in comfort and blister free. I'm really thinking about repeating the purchase but my outfitter is trying to pressure me into Merrell trail runners. He says they'll ride better and last longer. I put Superfeet in all my shoes so other than the toe box and heel cup I'm not concerned about how they "ride". I'm not really sure what he means by it. I've never had experience with Merrell anything. Can anyone give advice on how they'll hold up?