Made that exact switch recently, was able to sell off the MBP and find an 11" (1.4/64/4) with case on kijiji and come out $50 ahead. Been a great switch, the portability difference is very nice. Had an external monitor for working on projects, so the switch to the smaller screen hasn't been an issue.
I second Hellhammer's comments, that other than an increase in portability (which you highlight as well), the 11" MBA would almost be a downgrade in terms of overall performance (tho it may *feel* faster due to the SSD.
Also, not sure the OP has an external monitor to work on, plus if you're looking at MBP w/o external (and it works for your use) or needing an external to make the 11" useful most of the time, I'd say the MBP would be a better choice.
Only complaint is that the battery life isn't as good, and that I sometimes think I forgot the MBA since my bag is so light...
Hah. I've had that "Is my computer even in the bag?" issue since I got the first MBA in 2008! Nice to see I'm not alone.
To the OP, I'd also surmise that asking this question in the MBP forum might get you different answers, and tilt your poll back in the other direction, rather than asking MBA owners if they think the MBA is better (of course they do! They own them!
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