You get what you pay for. This shoe edges as well as my aggressive sport shoes while allowing multi-pitch comfort. Also climbs crack well, smears/slab adequately. There are better smearing/slab shoes on the market; mythos, moccasyn, but as this shoe softens/wears, I expect it to improve in that category. Durable thus far.
Sizing: I'm a 10.5 running shoe and got the 42. Was somewhat painful at first, but has stretched a bit and when I realized that tightening the laces produces pain with no improved performance, I have been keeping them looser with improved comfort. Probably could have gone 42.5, tough to say. I probably still have some breaking in to do even after several multi-pitch days judging by other reviews.