The Toshiba Portégé R500. This thing is one heck of an ultraportable. The R500 sports a 12-inch display and a full size keyboard and yet still is able to weigh in at only 1.7 pounds.
The last Toshiba Portégé R500 weighed 2.4 pounds, to lose those ever important 0.7 pounds Toshiba removed the optical drive.
The Toshiba Portégé R500 starts at $2,599, and although that is including a 64GB solid state disk I still think it is a little expensive. The MacBook Air, with an 80GB non-SSD is only $1,799. I would rather see the R500 without the SSD, which may be an option but I don’t have that information at this time.
The MacBook Air is nearly twice the R500’s weight but it makes up for it with its larger screen and nicer style.
The R500 is a really good option though for someone who values having the lightest notebook they can find and doesn’t care about spending a lot of money.