I'm currently running 13.04 on my production machine (which I rely heavily on for work). I currently don't have any external storage to do SSD clone to, but I'm really temped to install nvidia drivers.
The nouveau ones are just too bad, the Unity feels sluggish, there is tearing of screen in even basic terminal apps like vim, browsers are slow and choppy, YouTube takes 10 seconds to switch to fullscreen.
I'be been running 13.04 beta1 for a while, and I had installed nvidia drivers from blob, and manually linked opengl 32bit libraries. It worked for a while, but crashed the system miserably few updates later.
Also, I am running customly compiled kernel (basically 3.8.0-19-generic that ships with 13.04 anyway, just having 1 commit removed which breaks sound). I have kernel-headers with it too.
I am tempted to use
Additional Drivers utility to install Drivers, but I know it has never ever worked for me in the past.
I don't know if binary blob from nvidia.com is safe either.
What would be the safest way to install drivers at this point? I will try and get some hdd to make a backup tomorrow.
P.S.: Never had problems with kmod-nvidia in Fedora. I'm new to Ubuntu tho. Card is 560Ti.