Apple MacBook Air MD231LL/A: Dual Core i5 1.8GHz, 13.3" LCD (1440x900), 4GB DDR3, 128GB SSD, Mac OS X Lion $999 or $1009

IMPORTANT: This (latest) model of Macbook Air's cannot currently have their memory or storage upgraded (except by Apple). The standard 4GB/128GB combo is certainly sufficient for most tasks, it's just worth while to take into consideration the current non-upgradability before purchasing. (But this is still a great deal for this machine).
Source:http://www.ifixit.com/Teardown/Ma...own/9457/1
Excerpt (from last page):"This is a difficult machine for us to recommend because of the lack of upgradeability. The RAM and SSD are not currently upgradeable, although SSD options may become available in time. While Apple's continued use of proprietary screws is helping our booming tool sales, it's a bad thing for consumers."

SSD upgrade option IS available:
http://eshop.macsales.com/shop/SS...o_Air_2012

This is the latest model. More details can be found below or click on any of links below.

Detailed Description

The ultimate everyday notebook is better than ever. MacBook Air now features the latest Intel processors and graphics, faster flash storage, and a 720p FaceTime HD camera. All packed into a notebook that’s incredibly thin and light. With up to 60 percent faster graphics performance, it makes everything you do feel quicker and more fluid than ever. And the latest flash storage is up to 4x faster than a traditional hard drive, making MacBook Air remarkably responsive.

Key Features

• 1.8GHz dual-core Intel Core i5 processor
• Turbo Boost up to 2.8GHz
• 128GB Flash storage
• Intel HD Graphics 4000
• Thunderbolt and USB 3 ports
• 720p FaceTime HD camera
• Thin, light, durable design
• High-resolution display
• OS X Lion
• Up to 7 hours of battery life1 (13-inch model)

Technical Specifications [apple.com]

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