I picked up an Air yesterday but ended up exchanging it when I noticed the glass had ripples in it. I couldn't see them when viewing straight at the screen but at an angle, I noticed. Once I noticed, I couldn't not notice. Best Buy swapped it with another and the new one is almost blemish free but still has subtle ripples on the bottom. I'm willing to live with it because I can only see them if I'm really looking for them and they can't be seen at all during normal use. It does make me wonder if this is common? Anyone else have subtle ripples in the glass on their iPad Air?