I figure I would get between $800-$900 for my 2.26ghz C2D. The i7 17" would cost me $2279 after student discount and tax. So upgrading to the 17" i7 will cost me $1,379-$1,479. Although my CPU, GPU, RAM, HDD, screen resolution, and screen size will all be improving, I don't know if it's worth it really. I use my 13" right now 95% around my home, so that's my main reason for wanting the upgrade. I have a gaming desktop PC so I really don't need an iMac. All suggestions and comments are welcome, thanks!