I played with this machine and its brother, the Samsung ATIV Smart PC Pro 700T. these are amazing machines!
what's your budget? If you can swing for the Core i5 model, do it. Because laptops/tablets are not upgradeable so the more powerful you can get, the longer it will last. The model with the Core i5 was amazing. I soooooo want this machine. It was $1100 at the Microsoft Store. keyboard was fantastic. when it's docked, it's just like a laptop. you can even fold it like a laptop. when you undock it, it's just like a compact tablet. pretty amazing stuff. the pen has a pretty narrow tip for a capacitive pen.
The one with the Atom processor was pretty good. and for simpler games like Pirates, that model will be good. But I can imagine lasting a good 5+ years with the i5 model in terms of performance. The Atom model might feel really slow in a couple of years. But it is sexy as well. The body has a different bluish color as well versus the more grayish of the bigger brother. The bigger brother is around $400 more? I know that's a lot of money but think long term.