lately i have been using my 17" MBP as a desktop replacement at home. i do take it with me wherever i go, but its a bit annoying as it barely fits into my bag. its quite a chore organizing the contents of my bag every time i pack up to stuff my MBP in at the perfect angle and still be able to close the bag . the weight of the MBP however, is not really as big of a deal for me (nothing wrong with a bit of exercise ). while the new MBA is definitely "ultrathin", its debatable whether or not it is actually "ultraportable". for me, a true ultraportable would have far smaller dimensions (like the eee pc), yet retain most of the functionality of a full-size MB. a bit more screen real estate than an eee would be nice too, so it could be used for on the go photo editing and such. something like this would be really pique my interest - anyone else?