I travel extensively for work and i need a good mobile gaming platform i think im going to go with the m9700 from alienware. i buy a new laptop every 18 months or so, so i dont get to far behind the times in terms of hardware evolution. The question i have is should i get the 2GB ram option or the 7900GS x2 SLI. I dont want to pay for both of the options i am just not sure which is "more bang for the buck" so to speak. Any Thoughts?