Has anyone played Ghost Recon Advanced warfighter on the C2D MBP? I am interested in how well the higher clocked GPU performs with that game. On my 1.83 MBP it can get pretty choppy in busy firefights and, of all things, the menus! (keep in mind that this is the demo I am referring to. Other Ubisoft demos i've tried tend to run far less efficient than the actual game once I buy it... has anyone else experienced that before?) Also how worth it is it, from a gaming perspective, to get the new 2.33 MBP (256) v. the new 2.16 w/ 128 MB VRAM? Worth the extra $$$?