Need advice on a Gaming Laptop for ~$1600 - M17x?

This has been on my mind a while, so i thought of asking around over here. I recently graduated, and am looking to upgrade from my current macbook (2006 model) to something with some more juice.

I'd like to be able to game on it, mostly Diablo 3 on decent res, maybe some starcraft 2 and dota2 !! I don't need it for any graphics work or any other kind of heavy duty stuff, but i'd still like to have a beast. I'm not comfortable with an assembled laptop.

What would you guys say about the Alienware M17x? (http://www.theverge.com/2012/6/22/3109804/alienware-m17x-r4-review) Here are the specs i picked. Any advice would be most appreciated.

Processor: 3rd Generation Intel® Core™ i7-3610QM (6MB Cache, up to 3.3GHz w / Turbo Boost 2.0)

Memory: 6GB DDR3 at 1600MHz (2DIMMS)

Hard Drive: 500GB 7,200 RPM + 32GB mSATA Caching SSD

Video Card: 2GB GDDR5 NVIDIA® GeForce® GTX 660M