i ride the gus because diam is too short for someone my size (6'4" 175lbs) and i love them. i have ridden them all of last season and they will last me through the next. I have done nothing but ride park with them and the only major problem is one edge pullout but that is due to the hard abuse. When i first got the skis they had a medium to soft flex and after a year they have become complete noodles (which i love).
My roommate rides the diam and he has had them for 3 seasons and they are not as soft as my gus. Both very fun