Linux is like food have been said ! Why do I like more raw fish than red meat ??? pear than apple ??
So honestly as I mentioned arch and sabayon for exemple are very similar in many ways like rolling release, recent updates, technical documentation (for sabayon you can use almost of gentoo one) ...
I can do same with both, But I like sabayon better
So too make it short :
1 - Define what application you need and check availability in you distro choices and choose A or more
2 - Install some of them if you have time or define one you will stick with for a while
3 - Use it on everyday purpose and learn a bit how it works
As long as you stay on linux with a separate home dir you can switch any time or even use differents distro in parallel.
Sabayon is very user friendly but because of that you may have thing you do not need installed.
It is however very customable if you want to.
If you find the package you need it will be much better than fedora for sure
The page I have post is the package history.
It shows netbean IDE package release history.
Blue is sabayon packages and red gentoo.
You can use gentoo package on sabayon (be carefull if you mix).
Finally, I suggest you install sabayon and try to use it for a while.