I sent mine back too for a refund. I hated it. The prism effect on the screen blows, and the tacky material ruins the whole touch screen input.
Another vote here for fullbodyfilms.com, its perfect.
Oh, and from what I read the back for fullbodyfilms and the BSE are identical, so what the previous commenter said about all the materials being the same is wrong with respect to Zagg. Zaggs stuff is definitely a different from the other two. Its more tacky and less clear, and slightly thicker.
I stand corrected. I thought they all used the same 3M material.
As for the corners, the key is to let them sit a while before you even bother messing with them. Mine were giving me problems so I just walked away from it for a bit, about 25-30 minutes later I came back, pushed them down and the back looks perfect.