I bought a generic run of the mill but powerful Sager NP8662 3 years ago. It's a Clevo, and other than the fingerprint reader, I don't need any other custom drivers on Ubuntu. Even the bloody webcam and card reader work out of the box on 12.04, which I'm extremely surprised since I have to install manually drivers on Windows 7.

I'd say, if you have the money to spend buy an OEM laptop.