I am thinking about getting an Apple smart cover, made of polyurethane, not leather, for my new iPad. I noticed that there are two versions (model numbers) for each color. For example, there are two model numbers, MD948LL/A and MD308LL/A, for the pink one. For those of you who have an Apple smart cover that works with the new iPad (3rd gen), what is the model number of your smart cover? Of course, by "working", I mean the smart cover needs to automatically sleep and wake the iPad.