The big news this week, which I'm actually a little late in getting around to, is the rollout of the new DX, which has both 3G and Wifi, better contrast, and all kinds of bells and whistles. To quote P, "F*ck the iPad."
Or, you can go with the slightly less expensive (as in half the cost) next-generation Kindle. Not so many bells and whistles, a smaller screen, but still has the new e-ink, free 3G, and WiFi.
Least expensive option is the plain vanilla Wi-Fi Kindle. This is probably the one I'm going to roll with when cash flow improves.
What are you going to read on your shiny new Kindle, you ask? May I recommend Charles Stross' The Fuller Memorandum? Or how about Saturn's Children? If you're not in the mood for fiction, there's always Victor Davis Hanson's Carnage and Culture, or perhaps Gary Taube's Good Calories, Bad Calories, which will change your thinking on diets if you're not careful.
Or, if you're not in the mood for books, there's always the Friday sale, Because you might need a Fluidmaster Adjustable Ball Cock. (N.B.: not actually NSFW)