The latest MacBook Air keeps the same sleek design as its predecessor and adds a zippier Core i5 processor for $100 less. The best part? You still get awesome battery life. The 13-inch Air lasted a very long 12 hours and 20 minutes on the Laptop Mag battery test. Add in a comfy keyboard and touchpad and easy-to-use OS X Mavericks, and it's easy to see why this $999 Air is our favorite ultraportable value.