I am looking to upgrade my late 2008 unibody 15" MBP to an MBA, looking at the higher end 13" with the proc upgrade. My main questions are should I just wait, do we still believe there will be a 15" air or air type model? What do you think I can get if I chose to sell this model, I have upgraded the HD to a WD scorpio blue 500GB, and replaced the stock 2 GB ram with 4GB. My main use of this machine has always been just internet, gaming, and working on spreadsheets, now that I'm back in school, I use it for notes too. I have a 27" iMac at home, but just really like the portability that the air gives, and it will significantly lighten my bags load.