The first machine I ever installed with a distro was an MSI Ultrabook and Linux, out of the box, visibly improved the overall performance of the machine, with no need for benchmarking. After tweaking and fine tunning, it only improved.
After that came a long series of Asus, a few HP, one or two Dell. Always flawless installs, out of the box. The only exception I can remember of was a very specific HP model where the modem had to be manually installed.
Having a hand full of companies designing and building for linux feels like being part of an exclusive, Apple-like club; the prices are high, the choice limited.
We should be pressing the industry to recognize the linux ecosystem for what it is: a stable OS, with an ever growing user base with money to spend that want quality support for the equipments they buy.