The Zonda C Is by far the best s2 car
It’s among the best S2 Hypercars but miles away from the best S2 cars.
Laferrari
F40 competizione
F50 GT
Senna
F1 GT
Centenario
Veneno
Lotus GT1
Noble M600 (one of most unknowed cars in game)
Zonda R FE
Porsche 918
GT3 '19
Ultima 1020
Sagaris FE
In terms of best can say special memtion for some cars with lack of speed for fast tracks, but normaly with handle and/or grip benefits.
Vulcan
Bac Mono
Zonda cinque
GTR FE
R390
Strattenversion
I’m not aware of the LaFerrari being quick? Whenever I’ve driven it, I’ve been underwhelmed.
Rayne’s list here is a good guide:
Maybe Laferrari isn’t so fast but it don’t lack speed in my mind, and the easy handle makes hard to loose control and convert ferocius in twisted tracks.