If you want to know how I got these rankings, read this.
By comparing the fastest qualifying times at certain tracks from the most competitive cars of each year from 2000 to 2010, I worked out with an aggregate points system which individual design was, on average, the fastest.
EDIT: Now this has been the subject of much anger from older fans, but cars from the 80s and 90s do not feature on this list. The reason being is that through advances in technology and aerodynamics, cars from 2001 and onwards were INHERENTLY faster than anything from the 90s, let alone the 80s. I DO NOT want to see inflammatory comments complaining that I somehow favour modern cars, all I can go off is the data available to me.