The Black Diamond Drop Zone is easily one of the stiffest pads I've ever used. Good for high catching high falls alone or under a softer pad in a stack. It offers decent performance in couch mode, seldom sliding due to the non-slip coating, however that same coating doesn't perform as well as one would hope outside, if there was a bit more material to allow a little more "sheath slippage" then this pad would (probably) never slide out on angled or slick landings..
The afore mentioned stiffness also makes bed mode a bit uncomfortable, however it is wide enough to accommodate two in a small tent so its not all bad,
Overall; good if used in conjunction with a softer pad, and decent non-climbing uses, the closure system could use a bit more material, so as to better hold small items(brushes,tape, cliff bars) but its a sure improvement from the old system.. oh ya, did i mention that its quite light..