I'm ordering one this week. I'm not getting an extended warranty simply because every time I've purchased a warranty for anything the device either lasted forever or broke miraculously right after said extended warranty expired...basically I'm breaking a mirror and walking under a ladder to see what happens.
It's more important to get a case or cover for it. The one Amazon sells is pretty good, but you can get one for half as much on ebay that's also real leather. I would have settled for a neoprene sleeve but the book type cases make it easier to hold.