Hi all, I've never had a Mac product before, but I will soon (hopefully within a couple of weeks). I do not have much knowledge when it comes to computers, so I was hoping maybe some of you could help me out. I want a 15" MBP standard glossy screen. But what are the differences between the Feb '11 2.0 ghz quad i7 4gb/500gb AMD 6490/256mb for $1359 refurb vs the Nov '11 2.2ghz 4gb/500gb HD AMD 6750/512mb for $1800? Unfortunately, I do not understand what these numbers mean even though I see that they are different. Is there any meaningful differences between these two computers? Are there other differences between the Feb '11 vs the Nov '11 computers other than listed above? Thank you!!