I used Ubuntu in my college for some light programming and felt really happy about it.
I am more interested in switching to Debian 12 than Ubuntu, since the former is really stable. Also, I came to know installing Debian is easier since it supports non free firmware.
I am currently using Fedora and have been eyeing Debian for a while. Just curious which one do you think would be closer to fedora between sid and testing? And when a new major version of gnome drops, about how many months would it take before its available for sid & testing?