Acer Aspire S3
The Acer Aspire S3 is one of the thinnest ultrabooks, but if design is your thing you might be let down because this one is mostly plastic (with a magnesium lid). However, the Aspire S3 is super-thin with a sweet price of $899. You'll also get more storage with its 320GB hard drive; the addition of 20GB of flash memory will speed up boot times.
• 13.3-inch display
• 1.6 GHz Intel Core i5-2467M processor
• 4GB of RAM
• 320GB hard drive, with 20GB of flash memory
• 6 hours of battery life
• Windows 7 Home Premium (64-bit)
• 0.51 inches thick
• 2.9 lbs.