I always used Ubuntu on my hardware and about 90% Debian derived distros for customers vs a 10% of Red Hat derived ones, some CentOS and some Amazon Linux 2. I really don't like rpm. I do adapt to the different organization of the configuration files but I prefer the Debian one (maybe because of habit.) Most importantly I feel it's easier to google for solutions to Ubuntu problems. Of course I'm also more used to do that, I'm probably at 20 vs 1 Debian/Ubuntu vs RH machines now.