Planning

Ok, my plan to stop hopping is to stay with the same distribution from around a mont, even if I'm bored.
To avoid downloading thousands of distros, I'll decide between the following:

• Ubuntu, at the moment 12.04. I'll just ignore 12.10, plus people says 13.04 will be much better.
• Kubuntu, not needed to ignore any version. Is my current distro.
• Xubuntu, also the last version available. Like the "fallback" one, if any of the others work decently, this always does.

And those are all my choices.
Now, why?

Ubuntu

People hate Unity, I really like it. I just hate Compiz, it's the cause of most Unity's bugs. Ubuntu 12.04, with Unity, is much more stable than 12.10. In fact, I haven't had any crash on 12.04, so that would be my version of choice at the moment.

Kubuntu

I've never been a KDE boy, but I've used it sometimes, and liked it. I stopped using it because of it's very heavy on resources, specially with KWin effects. KDE 4.10, though, has a much better performance, and you can happily disable some effects, in my case the minimizating ones. If you do that on my computer, KDE will be as quick as Xfce, I'd say! It's much more resource hungry than Unity and, of course, Xfce. Idleing with Chromium (without Flash), Quassel and a Terminal, 10% of CPU (2,00GHz I have)... On Xfce it's ~5% with Flash! 

Even though, KDE won't crash, as its CPU is high but constant, not like Unity which goes up and down and causes crashes.

Xubuntu

My fallback distribution. It always works for me, I never had a problem with it! Besides that, it's a bit too lightweight for me; KDE has more features, Unity has better looks. So I preffer trying them, but if in the end any of those are my choice, Xubuntu will be...

Actually...

Actually, I'm on Kubuntu 12.10 with KDE 4.10. I'll try to stay there for about a month. Here's my Unity-like desktop (thanks phunyguy for the idea!).

My current desktop!

So hopping isn't nice

Yes, hopping isn't nice. There are a lot of Linux distributions, but I think that for the distro hoppers like me, the best choice is a newbie distro. Why? — you'll think. Well, if I try, say, Arch, and I get frustrated because something doesn't work, I hop. It would be better to stick to a newbie, simple distribution, and if something is wrong, try to solve it but NOT hop.

That's easier to do on a newbie distribution, of course.

My current Xubuntu desktop.

So I'll be using an official Ubuntu derivative, or Ubuntu itself. Ubuntu 12.10 won't be my choice, I'm afraid. Unity is crappy on 12.10, and I don't want to use Cinnamon. Ubuntu 12.04 with Unity is lovely, and I think I'll be using that one.
We also have Xubuntu 12.10, which is my actual distribution due to its GNOME2 likeness, and Kubuntu 12.10, which is the best KDE IMO. But, should I use KDE? I'm afraid I've been too much time using GTK things, and I may got frustrated with GTK integration on KDE. It would be difficult to adapt myself to Qt apps.

So, we have Ubuntu 12.04 here, and Xubuntu 12.10 there. I'll be dual booting for a while.

Ubuntu 12.04.2 will be released soon, February 14th if I recall correctly, so perhaps I should wait until then to install it.

I never had problems with Ubuntu 12.04 and Unity, or perhaps I had before 12.04.1. So I'm sure 12.04.2 will be lovely. I just wanted to have the last everything — i.e. Ambiance and Radiance themes — so I upgraded to the 12.10 disaster.

But 13.04 comes to save me! Everybody says that —even being in active development— is the most stable Ubuntu they ever tried, so that's cool to hear. I think I'll stay on Ubuntu 12.04 or Xubuntu 12.10 until then!

Cheers.