PC gaming is always good fun, Imsure will not regret switching over! =) I personally prefer gaming on a Desktop but if really think you would prefer gaming on a laptop and pay the extra then go ahead mate!

Only thing I would say though is dont sell your xbox! chances are you will want to play games on it at some point in the future plus they arnt selling for alot second hand nowadays!

here an early welcome to the uber gaming system!!! =D