Originally Posted by Erfankam
I should say that mint is actually another ubuntu and I made me exhausted after just few minutes.
I think if your decision has been constraint to just these options, ubuntu will be winner. But If you want pick a pace forward, go test another lightweight distribution like poppy and so on.
Actually if you have any interest in learning anything about Linux I would recommend mint.
Like Erfankam said they are both essentially ubuntu. The difference is the Desktop environment.
To my knowledge, and I could be wrong because I don't personally use ubuntu, the current LTR only had Unity as a desktop environment.
Unity is very colorful and so easy to use that your grandmother could probably figure it out.
The problem is that it's interface can be quite crippling to experienced users, and I would assume this would also make it difficult to actually learn linux. It's also really slow.
You could always change the Desktop environment, but if you're going to do that anyway, you might as well pick something that already has it.
Here is a breakdown of popular DE's and WM, and their uses (this is of course, only my opinion.)
Unity or Gnome 3:
-Good if you have no interest in learning
-Good if you don't mind sacrificing performance for something that looks good
KDE or Gnome 2:
-In my opinion good compromises of performance and elegant looks. People that were raised on windows will be pleased by the graphical appearance.
-They are not the fastest options, but much faster than Unity or Gnome 3
-They are much easier to modify and use at a more advanced level, but generally they should handle most tasks for you.
XFCE and LXDE:
-Slightly faster than those mentioned above
-Slightly less bells and whistles, but still generally easy to migrate to. XFCE is one of my favorites.
Openbox and Flux Box:
-Take a little bit of getting used to, many tasks have to be done manually or with external programs.
-Once it's set up It is amazingly fast even compared to XFCE
Sorry about the long winded letter, People always go back and forth about what distro is best. In reality As long as you stick with a stable build (I recommend Debian derivatives or cent os) The important part is the Desktop environment, or window manager.
Also, there is a lot more that I didn't mention. These are just some of the more popular ones.