Finally I am going to upgrade my 12" PB G4 to a 15" MBP (probably immediately after the MWSF). I haven't decided between the two 15" models yet. I am going to have 2G ram, so the only difference is CPU and graphics. I believe the difference in CPU clockrate won't make much difference, since CPU is seldom the bottleneck. But I am wondering how much of a difference would 256M video memory make vs 128M? Could that justify a $350 price difference? I am not a 3D designer, but I play games from time to time. I also heard some bad things about the 15" screen. Would it be a bad time to purchase a 15" MBP at this time? Any advice would be appreciated. Thanks!