First is Porsche 917

Very closely followed by Ferrari 250GTO

Very closely followed by Ferrari 250LM

Closely followed by Porsce 911

Fifth is Ford GT40

Most common manufacturers:
Fly: 25%
Scalex: 10%
Revell/Monogram: 8%
Ninco: 8%
But these figures reflect 10 years of purchases. Today I buy very different models & brands. Very few, but occasionally expensive (often resin) cars.