Both my wife and I have these pads. She is a 5'8"ish side sleeper and has the regular size, I'm a 6'1"ish back sleeper and have the large size. I'm actually ok with the length of the regular size, but prefer the width of the large to let my arms down. Both pack down remarkably small, with the large size only about an inch and a half longer when rolled. When fully inflated they are a bit firm, we usually fully inflate them, lay down, and slowly let air out until it feels just right. The thickness is nice for my wife, since even as a side sleeper she doesn't bottom out anywhere. Probably not enough insulation for winter, but we don't camp/backpack then anyways. We haven't had any problems with leaks or the material looking worn, so it seems to be durable. Certainly feels more durable than the regular neoair. We've always used ours in a tent. From an in-store comparison, this seems less "crinkly" sounding than the neoair.
Minor gripes: included stuff sack (big + over the neoair) is way too big, the inflation valve is hard to clean (really a gripe with almost all inflatable pads)