I have bad experiences with Debian, I can try... but simply... I hate it, the installer is so much complicated
That's a little contradiction, isn't it? When you like a distribution for a power user, so there'll be always a little hassle with this and with that - but nevertheless you'll be in control.
Nvidia - that sounds like you're using state-of-the-art gpu's, do you?
Still I would suggest you Debian, perhaps take a look at Gentoo - not so much Out-of-the-Box but a neat solution
Beside all this discussions about what distribution to choose it's just a question DEB, RPM or your own.
You can modify all distributions to your needs, you don't need distro-X, build on-top of distro-Y, which was build around distro-Z... X, Y is often just one of the big distributions with some package selection and almost any further integration of different components. I think here about these so called distributions with Multimedia in focus.
Nevermind, just decide if you want DEB or RPM to handle your packages. That's it...