Looking for a good gaming notebook under $2000 - Help?

You are in the right place. You answered the first question about price. Another thing to consider is what screen size you want to play on. You can find decent packages in the 15.4'' category. (check out Asus) Another thing to consider is whether or not you can find that balance between mobility and performance. The better the hardware, the heavy the laptop will most likely be.

Avoid Alienware. They specialize in overpriced crap.
Dell makes decent laptops, but you have to be willing to deal with the shaky support.
Gateway offers their NX680 line which is basically the same as the E1705, but Gateway has been getting better support numbers lately than Dell.