I've gone through the Apple iPad case, a silicone one, and now this. The apple one was alright, best feature was the flap that covered the screen when not in use, but I really hated the extruded edge all around it sticking out, and the holes didn't line up well by the speakers and bottom. And of course Apple designed it so that you couldn't dock with their dock while their case was on. Unit slid in and out very easily though, but that edge was the deciding factor in not using it.
The silicone one I got was under $10, provided great grip on the back, but again couldn't be docked while on. I cut the back out of it on the bottom and could dock with it then, but didn't like the look then.
Found this here, and it's the exact same one I nearly bought direct from the manufacturer a few weeks ago for more than twice what it cost here. Glad I didn't, since getting it over half off through Amazon was a much better deal.
Unit really is held in there tight, this was the hardest one to get into the skin, but not unusually so. Unit ships with a small microfiber cleaning cloth, some wet wipe for LCD screens, and some stylized iSkin stickers. Only took a minute or so to get unit into the case, and the case feels good inside. See thru plastic in the back is slightly solid, not as grippy as the colored part, but is textured so it's still not quite as slippery as the ipad when naked. Good protection from normal day to day use.
Only reason I gave four stars rather than 5 was the button pressing and the docking cover. Home button works just as easy, volume press works slightly less than without skin, power a little tougher than the rest. But getting at the rotation switch is a pain, to get that flap out of the way unless you have some long fingernails. The port cover on the bottom is easy to get out, it's held in by a extruded piece that actually slides into the slot where the cable goes. The removable piece on the bottom that you take off to dock it is a pain to remove and put back on too. I may spend more time with that cover off than on.
All in all, happy with the product for the price, but wouldn't have been happy with it at the full retail price.