Bram, this is exactly the quandy I wanted to put people in with the 5 league cars. :sinister:
I know it's a league and everything and some people will pick the fastest, be a bit "win, win, win", but I'll probably end up picking the one I have the most fun in, same as Warren.
a) Because I want to enjoy the league first and foremost, and
b) see a) above.
If I picked the car that game me the fastest laptimes, right now, I'd probably end up hating the league experience, even if I would (probably) do better. And where's the point in that?
As far as I can tell, there isn't one that's head and shoulders above the others, so whatever criteria you choose to decide by, as long as you enjoy driving the car, everything's sweet.
If you like the engine noise, the Ferrari is unbelievable, and as Yoeri pointed out, the Shelby is loud too. In fact the only one you might not fancy on exhaust note alone is the Alpine.