Hey Gang...

I'm one of many Ubuntu users out here and enjoying it on my desktop computer. But now I got a few extra bucks in my pocket and want to pick up a laptop for travel reason for the RV. But 99% of everything comes with windows. What I want to know is there any laptop to watch for or hardware to watch for that doesn't work with Ubuntu? I know there is System 76 for laptops too but I can do a bit better in price I think. So what out there for laptop information I got to watch for?