I am getting my brother, who owns an iPad 2, a wireless keyboard. I've seen a few models at Brookstone and Best Buy but don't know which is the best. I've looked online and found ones from Logitech and various other manufacturers. Which is the best? What features should I be looking for? Should I get one that has a case and stand with it? I know next to nothing on this topic, so figured you guys could point me in the right direction. I have no problem spending $100 or so. Thanks!