From what i can see, you know almost next to nothing about cameras.
You don't know what sets the L lenses apart from normal lenses.
You don't know whats the difference between a FF and a crop sensor.
You don't know what is "fps".
You simply want a FF camera because someone tells you it's good and makes L lenses do "special" stuff.
Do you shoot in Auto mode all the way? I have a strong feeling that you do.
If so, I highly suggest you do some intensive homework before getting another camera.
But of course if and I quote, "Price is not an important key to me.", then perhaps I'd suggest the 1DsMK3 or wait for the rumored-about-to-launch-state-of-the-art-and-whatnot 5DMK3.