I'm getting all the bits for my x1000 tomorrow

I would recommend a second hand Sam 440 first, though, as they're cheap and give a good idea of the OS. They're plenty fast enough for most uses, but too slow for hi-def video and the browsers are a bit sluggish... but if you find you like it you can then sell that without any loss, probably, and go up to the next level like a 460, or even an x1000 which is very expensive but very nice! And if you don't like it, you can still sell it and not lose anything.