I'd like to know what people have.

I have an Alienware M17x Laptop.
http://www.dell.com/us/en/home/notebooks/laptop-alienware-m17x/pd.aspx?refid=laptop-alienware-m17x&s=dhs&cs=19&~ck=mn


Specs-

Memory: 8GB Dual Channel DDR3 at 1333MHz

Hard drive: 512GB - 2x 256GB Solid State Drive

Graphics: ATI CrossFireX – Dual 1GB ATI Radeon Mobility HD 4870

Processor: Intel Core2 Extreme Quad QX9300 2.53GHz 12MB Cache, 1066MHz
OS: Windows 7

Screen: 17-inch 1920x1200 (1200p)

Extra: Slot-Load Dual Layer Blu-ray Burner

If you have the money I would definitely recommend buying an alienware laptop or desktop. I spent over $2k on this.