Hi, I currently have a beautiful 15" matte MacBook Pro purchased in September 2007 (i.e. non-unibody). Anyway, it's a great computer in perfect condition but I find it a nuisance to haul around campus. It's quite heavy at 5.5 pounds, whereas the 13" sheds a pound and ends up at 4.5. Would you recommended that I sell it for around $950 and purchase a 13" MacBook Pro to replace it? I'm thinking that it would be much more portable. But would it be a big step down in terms of screen quality and the general computing experience? Thanks!