Just got the small one when the CFS cracked and have only paddled it in the crystal gorge and dillon reservoir. that said, i also tried the big'un on the black canyon. so far, the boat has been excellent, enters eddies crisply, has enough speed, is stable, and boofs like a champ. all told, its predidactable, stable, and changes direction nicely while still holding a line. as for durability, the jury's out still. i found the large nomad to be a bit too large for our colorado creeks.