I have been using a mid-2009 13" MBP for more than three years, and while it still works great, would be open to an upgrade. Unfortunately Apple isn't making it easy. I strongly prefer the 13" form factor and am really only interested in a 13" machine. The Retina machines are very expensive for something with no discrete graphics, particularly with the 512GB SSD I would personally want. I am not necessarily unwilling to pay $2,500 for a laptop, but it does make me hesitate. The MBA also gets expensive when loaded up with a lot of storage space. I think in an ideal world I would probably be most interested in a loaded 13" MBP without Retina but with the 1440x900 resolution of the Air. I might even be willing to pay more for discrete graphics. I could then plug in my existing 512GB Crucial M4 and roll. Sadly that machine does not exist . . .