Yes the smart case is a hit and miss, many DO NOT FIT. But if you're like me just go to your apple store with your ipad and try a few if you really want to give it a shot.
Fortunately for both my wife and I our smart cases fit pretty much perfectly and we both love them as they keep to the slim factor, and they provide good grip.
Please note this: That sharp edge do get uncomfy depending on how you hold it, and I was a strong believer that this was a very dumb and pointless design flaw until one day I dropped the ipad on my hard wood floor, edge first, I observed the unit bounce. After picking it up and being conviced that my ipad was surely cracked to bits, it wasn't as that sharp edge design served as a BUMPER. Just know there is a method to their maddness.