play angry birds
send email w/ attachable keyboard
Also, what type of smart phone do you use? If you are familiar with Android, I would go with the ASUS Transformer Infinity - excellent screen, quality components, keyboard dock extends battery life and good OS. If you have a windows phone, it might be worth testing out the Surface RT. Regardless of what direction you want to go, I would go to a BestBuy to test out both products so you feel comfortable with the solution you choose.
I am a believer in spending the money once rather than having to upgrade all the time. Everybody is different - if your budget is firm, the Transformer Pad is from the same series of tablets - the biggest difference being the screen quality. As a movie fan, screen res is a huge issue for me. If it isn't a make or break point, then I would see if you can get your hands on one to test the weight and feel of the tablet. ASUS makes wonderful products.
I personally am looking forward to trying the Surface Pro next month (or whenever they release it - they haven't given a firm date yet). Win8 functionality in tablet form factor. If it does well, it's going to be my new toy.
I ordered the Lenovo IdeaPad A2109 (22901DU) 9-inch 16GB Tablet for $230, and UPS says it's out for delivery. It will be my first tablet. After studying specs and ratings, I selected this one, and am really looking forward to it.