I'm in the market for a Macbook Pro. I can get one of the old models on clearance at Best Buy for $1,799. But for only $200 more, I can get the low end model of the brand new MBP. The only big difference I can see is that the old MPB has a NVIDIA GeForce 8600M GT graphics with 512MB GDDR3 SDRAM and the new MBP has NVIDIA GeForce 9400M/NVIDIA GeForce 9600M GT graphics, but it's only 256MB of SDRAM. So which one will work better for me in graphics intense operations (Photoshop, Final Cut, gaming, etc)? I don't know much about graphics processing, so I don't know which is better: 512MB on the old card, or 258MB on the new card. Or is the performance of the two close enough that the $200 difference isn't really worth it? Thanks!