In the car you want something you don’t really have to look at so. You don’t want menus/submenus and the like.
I bought myself a cheap JVC a few years back and I hate the thing. You have to go into the menu to change the radio station. Like literally select the menu, select station, scroll through…
Completely agree about the buttons. You want something you just need to press once.
When I was looking, there was a company called Nakamichi doing some very understated headunits. Can’t remember why I never bought one, might have been a budget thing. A quick search reveals they might have jumped on the disco light bandwagon looking at some of the newer models though.