You want to get a better performance machine? Upgrading to a SSD (Solid State Drive) will make you see (and feel) good numbers in the benchmark comparison with a regular spinner hard drive. Applications will open faster, your OS will be running healthier and your overall experience will be a snappier one. So back up your drive, invest on a SSD and see what MacBook Air owners have been emailing about.
Patriot Wildfire 120GB This brand's first experience in SSD is a good one. Fast writing time and zero crashes. Impressive speeds of 555MB/s that provides a good performance. Fast date rate speeds means better user experience. You can get one at $239
Adata S511 240GB At this price, you have no excuse to not upgrade to a hi capacity SSD. With speeds of 500MB/s. It's a 2.5" dryve that you can pretty much fit inside any machine you may have.
Samsung SSD 470 256GB The cheapest of the 256GB club. Around $384. You can cut your computer's boot time in half with this high performance SSD. Nice brushed aluminum finish that protects the drive against rust and shocks. No moving parts means great battery life too.
Kingston HyperX 240 240GB Speed rates of 525MB/s in read and 480MB/s write. Longer life due to the fact that it has no moving parts (remember they are like RAM chips stacked together!). Reduces load times in applications and great transfer speed of files between desktop folders. $483 may not seem cheap, but the performance's gain will be forth it.