First, let me explain:
I love my Alienware laptop, I do. It's an awesome, powerful machine. But, as of late, I've not been very active in gaming on my laptop. Let me also preface that I use laptops because of my kids running...
This would be perfect for on the go gaming. Sure it might not be the best desktop replacement (as I type this on an M17x,) but it's perfect if you're always on the move, and you wanna bring your (offline) Steam games with you.
Can be under $1K? Win all around.