I have a 12 and the screen is fine. It's no OLED but I have no complaints for what it is. I love it as a secondary tablet-laptop for drawing and reading comics (primary laptop is a Framework 16 which I'm also in love with for Unity3D game dev and similar tasks, that one needs Windows for Visual Studio but I'm enjoying Gentoo on the 12)
There have been a few screen revisions on the 13, so there's a decent chance that a better screen will be available eventually on the 12 as an upgrade.