Best cars according to the price range:
Under $10,000
Hyundai Accent L
Under $15,000
*tie*Hyundai Elantra GT & Toyota Corolla S
Under $20,000
Mini Cooper S
Under $25,000
*tie*Acura RSX Type-S & Nissan Altima 3.5 SE
Under $30,000
*tie*Lexus IS300 5-Speed & Nissan Maxima SE
Under $35,000
*tie*Honda S2000 & Infiniti G35
Under $40,000
*tie*BMW 525i & (est)Nissan 350Z
Under $45,000
Chevrolet Corvette
Under $50,000
*tie*Lexus GS430 & BMW M3
Under $55,000
*tie*Lexus LS430; Infinti Q45; BMW 540i
Way above $60,000
McLaren F1
Ferrari F50; Marranello series; F360 & F40
Porsche 959; 911 Turbo & Carrera GT
Jaguar XJ220
Bugatti EB110 & 16/4 Veyron
M-B SL600 & G500
BMW M1; M5 & Z8
Land Rover Range Rover
Toyota Land Cruiser/Lexus LX470
Lamboghini Countach; Diablo; Murcielago
But overall, the best car in the world is not a Ferrari or Lambo neither a Porsche or a Mercedes (in my choice).
Honda S2000