My X300 is, bar none, the best laptop I've ever used. Unlike the MacBook Pro or T-series laptops (my previous all-around faves), it doesn't attempt to be a desk

My X300 is, bar none, the best laptop I've ever used. Unlike the MacBook Pro or T-series laptops (my previous all-around faves), it doesn't attempt to be a desktop replacement, but it's worlds more capable as an all-around travel computer than the Air, due to the internal optical drive, onboard Ethernet, and numerous USB ports. The 301 looks like a very minor, but worthwhile, upgrade. Of course, the fact that the Air runs OS X, while the X300 runs Windows or Linux, will make the decision all by itself for most potential buyers. Personally, I find that the X300 running Ubuntu makes for a nearly ideal mobile development system.