I agree with bic on the nook thing. I was considering getting a kindle fire, than rooting it and running android, but after some research I discovered the leagues of better-ness the nook had over it.
For basic browsing, though, I use an HP mini with windows 7, 2 GB DDR3, and a 250 GB HDD. Got it new at an auction for $250, and it retails for $599. I would never consider it for retail price, but flax was cheap.