I am genuinely intrigued by the MBA, but I can't seem to get my head around getting that instead of a MBP 13" (I would be getting a MBA 13", 11" is too small for me).
Aside from weight, which isn't a real concern for me in a MBP 13", if I decked out a MBP 13" w/ an SSD, is there a compelling reason to still go with an MBA? One of my main concerns is that the MBA can only go to 4GB of ram while the MBP can theoretically go to 16GB. Seems more future proofing etc.
Just so you know, I do mostly iOS, Android, and Web dev (Ruby, Python, JS and Erlang).
I also have several Ubuntu instances up at all times if I'm doing iOS or I run Ubuntu the majority of the time if I'm doing other stuff (Ubuntu is still a better dev environment, IMO, but that is for a different post :) )