These have become my favorite running shoe. I am exclusively a trail runner, who runs a variety of trails - from groomed, smooth gravel paths to rocky, hilly, and very technical terrain in the mountains. The Masochist shines as a great all-around shoe. It is lightweight, has great arch support, springy cushioning - not mushy soft or hard - just right cushioning, a wonderful fit - snug, well fitting heel and a nice roomy mid-foot. As opposed to some shoes that fit like an unstructured box on the foot, this shoes has a nice form fit. Great tread, too. Love it! Now I just hope Montrail won't re-work the whole thing and ruin a wonderful shoe!