What is the best Gnome3 distro, in your view? I am mainly interested in stability and usability out of the box. I've found Fedora (well, no surprise here) working very well with Gnome and not so good with XFCE, for example. Also openSUSE with Gnome works well, even if I have just a couple of days of experience with it. Ubuntu was a bit more buggy, with some application freezing now and then.
Agreed. Arch is a good distro too, and it's stability is pretty much the same to what Debian Stable has to offer. Not "stability" in the sense of "programs don't change for 2 years", but "this system works".
Yes, Debian stable. Toward end of life, however, you will find that cutting edge packages will not install, because of missing dependencies. Missing even in backports. Debian testing isn't that unstable.
Fedora works very well with Gnome3, but you have to reinstall every 18 months, and its bleeding edge nature comes with a few inevitable bugs. Other than that, CentOS (also RedHat family), or Antergos, Manjaro, Arch (Arch family).
Though it is inherently more unsecure than any Debian branch. If a package in Unstable is discovered to be vulnerable, it could take months until it goes down to Testing. That's why using Unstable (which is rather stable) with apt-listbugs is probably the best decision when it comes to security. Either that, or plain Stable.
@mirimir Thanks, but I forgot to mention something: When a bug/vulnerability is found and it affects both Testing and Sid, it is possible to work around the delay issue. For example, Testing and Sid are usually very close together, so if package 'foo' needs to be pulled from Sid (assuming the user is using Testing), it shouldn't cause any harm to the system since both Testing and Sid are close to each other. If the user knows what he/she is doing, he/she could run a mix of Testing and Sid. This mix should be: Testing as primary release, and if needed, pulled packages from Sid.