A friend of mine is selling her 17" MBP (unibody 2.66), and I'm seriously considering buying it. It has a 128gb SSD, and she's selling it for about $1900. I have a mid-2007 15.4" MBP, 2.4 Ghz, upgraded to 4mb ram. It runs wonderfully, and I don't really need to upgrade. However, the extra screen size and the unibody perks (battery life and trackpad, mainly) are very appealing to me, and it does sound like quite a deal, especially since I'm hoping to sell my current laptop for about $1000. Does this sound like a good upgrade, or am I just being greedy? Also, for those of you who have switched from 15" to 17", did the extra weight and size become an issue after you switched?