I'm trying to decide which machine to buy. I'm looking to get a refurb unibody MacBook Pro 15", but can't decide between: 2.53GHz Intel Core 2 Duo, 4GB 1066MHz DDR3 SDRAM - 2x2GB, 320GB Serial ATA @ 5400, NVIDIA GeForce 9400M + 9600M GT with 512MB or 2.4GHz Intel Core 2 Duo, 2GB 1066MHz DDR3 SDRAM - 2x1GB, 250GB Serial ATA @ 5400, NVIDIA GeForce 9400M + 9600M GT with 256MB Looks like the main difference between the two is a slight processor speed bump and 512 MB vs. 256 MB of video RAM. Is it worth the ~$500 for this? Or should I just stick with the lower model? The lowest-cost option is preferred, but I do need to be able to edit 1080i P2 footage shot on Panasonic AG-HPX500. I'm mostly using just Final Cut Pro and Compressor, no Color or Motion. Will the low end MacBook Pro suffice for HD editing? Would a 7,200 RPM system drive be necessary, or will the stock 5,400 be okay? Obviously, I'll max out RAM after I get it, and use external storage for scratch disk. Any suggestions are greatly appreciated.