All of the current inexpensive devices are buggy or flawed. (I'm speaking from experience as an owner or user of several)
You mentioned the ipad. It just might be the best for your needs. Otherwise, wait and see what else comes along later.
PS- Stay away from full operating system devices (XP, Vista, 7, etc). I own a couple of tablets with those OS. They're tempting with full computing power but they are really overkill and miss the whole point of having a small MID device.
Last edited by pphilipp; 07-31-2010 at 08:20 AM.