I bought like 4-5 dell laptops with ubuntu preinstalled by now. The experience so far was somewhere between great and ok.

The most important thing with these laptops is that I know it's gonna have the right hardware.

At some point I stopped reinstalling ubuntu as it just worked anyways.

My exact computer as well, except that mine came with Windows and I installed Fedora on it. Interesting note: Tried ubuntu before that, not everything worked as seamlessly as fedora. I am a Fedora believer from now on.