I've had my 17" MBP since December 2006, it was perfect for me at the time, I really just used it at home. I never realized just how mammoth and heavy it was until I started college in Sept. 2008. I have only brought it to school 2 or 3 times, its just a pain to carry around campus! I "need" a new smaller Macbook. I would love to get the refurb 15" but I won't get my iPod, and I feel the extra "7 hour" battery is important at school. 1) Coming from the 17", the 15" should feel much more portable being smaller, and a pound lighter, or am I going to wish I skipped to the 13". 2) The 9400M? I've searched and it seems to be comparable to my X1600? I'm hoping to get more into Photography, I use LightRoom 2 a few times a week, it seems to hang semi-often on my mac, how will the 9400 perform? 3) Keep in mind this is my only machine. If I could afford the 15" with intigrated, I would. Will the 15" be much better for my photo work, or is the portability of the 13" outweigh it? I am looking only at the low end 13" or the low end 15" due to budget constraints. It has to be new for the iPod promotion, plus the new battery life.