I think that as far as I'd go, in terms of something you could remotely drive on a regular basis, would be the Huracan. It's gorgeous, amazing performance, it's like Viagra on wheels, the sound is incredible, and it's something you could drive around in as long as it doesn't require hauling much stuff.

Things like the P1, 918, LaF, etc... are cars you buy when you already have three or four super-cars in the garage and want some statement pieces. The 918 is probably the only one you'd really want to drive anywhere besides the track, once the "I've got a $(#!in hypercar" rush wore off. The 918 seems far and away the most drivable of the bunch though.

And of course after you have a nice daily driver as well. I love the sound of a Les Paul through a Marshal stack on 11 as much as the next guy, but having one behind your head all day long every day might not be all its cracked up to be. Something like the 458 Speciale, having that screaming thing back there is something you'd probably only want sometimes.

The GT3, OTOH, I think sounds incredibly nice, musical as others have said, even without the muffling option turned on. It's sings, it doesn't yell. The Huracan also, to my ears, as best I can tell not actually ever having been in one, is a sound I could enjoy almost every day I think.

Cars like the Koenigseggs or Huayras of the world, they look cool, but would probably be a pain even for occasional driving on the road. They are wide as tractors. They mostly seem to be bought by collectors who put them in storage to say they have one and leave them there. And they aren't necessarily something you want to take out and thrash on a track on a regular basis either. Same goes for the P1, 918, and LaF. They are one time make cars. You wreck it and even if you are stupid rich, you can't buy another one to replace it. You can always buy another Huracan or GT3 or 650s.

Could you even track day a Huayra in the US? Would it meet noise regulations?

I just hope that I get into a position to buy one such car in my life before I croak, and while I can still go get in it without a walker, before they all go turbo (which may not be very long.)