See, I'd want something I could use quite normally, but something that felt uber-special with an engine made by the gods. I'd want something that would challenge me as a driver, but still remain reasonably simple.
Hence, CGT. Something like the P1/918/FlF would be quicker and more usable everyday, but nowhere close to challenging the driver unless you hate your licence. McF1 I get, although it's never appealed to me, and even the LFA for that engine. But not the current crop of hypercars, no matter how impressive they may be.