I personally like the Ford GT as I feel it has great power and has very "easy" handling to deal with. Actually the 430 Scuderia is also a solid choice, but the 458 Italia surpasses it in every way.
The McLaren can be a handful, but dangerous in the right hands. I have noticed that it can understeer a bit, but of course that could be not enough tuning on my end.
But if I had to:
1) Ford GT
2) Ferrari F430 Scuderia
3) McLaren MP4-12
The Scuderia, it's more fun stock than tuned.
I'd agree that the 458 Italia is better than the Scuderia.
Buy a 4WD
Agree all you like, it's not.
For the increased weight or for the understeer?
What good does grip do if you can't turn? Sure for drag racing, but not for circuit..For the grip...