Chromebook
A fantastic device, Lite, Huge battery life, Yes you can install Linux (To run concurrently with chrome OS) as the both run as VM's, But i find that the Chromebook does everything i need as is, Ctrl-ALT-T and i can ssh into another device. Via the browser i can do most things, and if i need to do some real work, I switch to a desktop as laptops just don't cut the mustered for me no matter what the OS when it comes to developing software (testing Yes) but not developing.
It's fast, Cheap, stylish with great battery life.
If you ain't tried one give it a go, i paid £250 for my HP 14 Best laptop i've had ever and my first was a mitac 286 !