There is probably one best answer here for the tablet you're after, and that would be Microsoft's iPad competitor, the Surface tablet. They've only started arriving in the UK, where I've read that Surface is available at John Lewis, in both 32GB and 64GB editions.
The Microsoft Surface 32GB is 399 pounds and you can get it right here.. Surface comes with a single, full-sized USB port which can take most USB devices on the market which makes it a much more versatile tablet than the iPad, or most competitors' tablets.
What you want to do on it, can easily be achieved - email, Facebook, photos, movies and more. Word is available on Surface, where most other tablets don't have Word yet. The USB port that you want, but isn't a must have, is a default on the Surface which makes it the all-round hero here.