Pretty good from what I've seen. I've been using one for the last year. One notable thing is that if you're using more than one monitor, you might have issues i

Pretty good from what I've seen. I've been using one for the last year. One notable thing is that if you're using more than one monitor, you might have issues if they have different resolution (it's unlikely you can do 2x 4K monitors). It's rather tedious to get X + your WM to run two different DPI on the two screens. I ended up having to run two X servers for two monitors, which has its own limitation.