Okay I have $1700 dollars to spend on a new mbp... currently have a mb which wife and I share but I need a laptop for me since I am a hobbyist photographer and need a comp to post edit i.e. Photoshop light room those sort of things.. so to my question which should I buy 17" mbp core2duo last years model mc226lla vs the current 15" i5 model? my concerns are.. 1. processor that big of a difference 2. graphics cards new vs last year 3. anything else you guys can give me insight in why I choose one over the other? do I need the 17" or is the 15" going to be fine for editing ? any info would be very very helpful guys. thanks so much. and sorry for another one of those which mac to buy.