I plan on getting one. Right now I'm thinking the i would be fine with the i7 2630Qm 2.0GHz processor. Is it worth going to the i7 2720 / i7 2820? Or am I not going to be seeing a big difference? Also for the memory I was planning on getting the 6GB DDR3 at 1600MHz. Is it worth upgrading to the 8GB?