So i was checking dell.com store and they sell a lot of laptops with Ubuntu as default OS, I was wondering if there is any good machine out there for elementary OS i have a Dell XPS 15 9530 and it runs okay, but suddenly the screen zooms like X50 and I only see like 10 characters on my screen, so it has video card issues i guess, any recommendations are greatly appreciated.
It might have to do with the graphics drivers. I recently bought a new Dell Inspiron 15 (5559) and had some issues which, however, could be solved by installing the newest kernel which includes newer graphics drivers.
If your machine is fairly new (or if you're planning to buy a new Dell machine) and has an Intel Skylake CPU, upgrading the kernel to version 4.3. or newer might help. For instructions to update to kernel 4.4 see here: http://ubuntuhandbook.org/index.php/2016/01/how-to-install-linux-kernel-4-4-in-ubuntu/