My friend just dropped $4,400 on an Alienware M18x loaded to the gills. It has its way with Rise of Flight, that's for sure.
Only problem is, when the SLI GTX 580Ms are active, the DPC latency is high and random audio artifacts start creeping into the sound that randomly appear and disappear, and the only way to fix the sound issue for now is to run on integrated graphics mode.
Also, the keyboard fails S-D-Space and D-F-Space, common combinations if you're playing FPSs.
I mention these as a lesson in that when you're shopping around for gaming laptops, raw FPS benchmarks and features aren't the only things you need to consider.