Hi, Buying my first MacBook Pro. Plan to use it for video editing with iMovie & Final Cut Pro. Doing mainly hobby work - family DVD's, friends' demo reels. Really not sure which MBP I should be considering. 1.) New 15 in w/integrated NVIDIA 9400 4GB RAM w/ed discount $1599 2.) New 15 in w/9600/9400 cards but 2GB RAM (which I could upgrade) http://www.amazon.com/gp/product/B0013FJBX8/ref=pd_luc_sim_01_01 for $1594 3.) Refurb 15 in w/9600 gfx, 4 GB RAM http://store.apple.com/us_edu_74709/product/FC026LL/A?mco=MjE0NDk5Mw for $1699 4.) Refurb 15 in w/8600M GT card 2GB RAM for $1349 http://store.apple.com/us_edu_74709/product/FB487LL/A?mco=MjE0NDk5Mw --- Will a dedicated video card cut a lot of rendering time off of my projects (again doing family videos, and some professional demo reels)? Am I better off to save some money with an older MBP with dedicated video and upgrade the RAM after a trip to FRYS? Also, is upgrading RAM for a MBP something you can do without a trip to the Apple store? Thanks for any help!