The Wall is a sick ski. I got to ski it last week at stratton. It's a little bit softer than the Karma, but it is also a true twin. Def. have to center mount it. It skis so nice, you can still carve on it like you can with the Karma, but it's a lil softer so it kills it in the park. Get it in the 177, I skied the 169 as well (5'8", 140 lbs I am) and it was wayyyyy too short. I skied the 177 all day until my last run when the only size available was a 169.