Edit: I’m glad so many of you have had no issues with multiple monitors. My set up is a little unusual (3rd display is an infrequently used large tv hooked through the receiver) and is definitely solveable but will take some effort (and honestly, I’d rather spend my spare time outside or with friends, so who knows when I’ll fix it.)
In some ways better, some ways worse. I lile that not everything resizes incorrectly, several moments after changing the monitors. On the downside, linux assumes third monitor is always on etc which can get annoying.
End result is, currently (and this is probably solveable, I just need to devote the time to being indoors and on a computer) sitting down to watch things on tv is most easily managed by setting up with the regular monitor on etc. But working on the regular monitors or switching a monitor between one computer to another, is much better on linux.