Macbook Pro Question

Hello all,

I'm in the market for a Macbook Pro.

My options are the lastyears model:

15" MBP
2.2 Ghz C2D
2 GB Ram
120GB HD
128 MB NVidea GForce 8600M GT

$1699

and the new:

15" MBP
2.4 Ghz C2D
2 GB Ram
200 GB HD
256 MB NVidea GForce 8600M GT

$1999

My question is....For my intended use which is PS CS3, Bridge, and Lightroom with large 20-30 MB RAW files. Will I see a large increase in performance opting for the newer MBP with 256 MB VRAM, over the older model with only 128 MB VRAM?

What about if I ever started using Aperture? Or is the extra $300 better spent on uprading system RAM to 4 GB?

Thanks for your replies.

-Ryan