Ah, yeah I knew about the Zonda F and the others as well. But yes, Production is a better term for sure. There's lots of gray areas in the car world.
I would likely get the GT2 RS if I wanted a track car (we're assuming I'm capable too), but it would be difficult to get anything over the 720S. That's an amazing machine and pretty much the gold benchmark right now for any supercar, IMO. Pretty much anything McLaren offers is fantastic.