Get a Nook Color and root it. You’ll get a reader and a tablet all in one. It really is a deal too good to pass up. They go on sale on the B&N eBay store every now and then for $200 + shipping.
The Nook Color is a terrific device, especially for the price.
Nook Color: “Flash is indeed coming to the device, along with an app store — Angry Birds is confirmed — and push e-mail, ushered along by an OS update to Android 2.2.”