17"MBP here too, and after 2 years its been a great machine, still decent specs by today's standards. But the size is starting to wear on me. I've entertained

17"MBP here too, and after 2 years its been a great machine, still decent specs by today's standards. But the size is starting to wear on me. I've entertained the option of upgrading to a new 15"MBP but it doesn't seem like a big enough jump to justify the cost. I hope Apple has a 15" Air in the works because that would feel like an upgrade in multiple dimensions - cpu, ram, display, weight, thickness, portability.