Put them on the Polo GTI today and gave them a thorough test and all I can say is they are probably the best tyre out there for a balance of handling, grip and price. £110 a corner.
I've had Toyo R888's and Toyo R1R's before and the Federals compare well and the reviews say that they last longer than the Toyo's and are more stable.
I'll definitely be buying these again when needed.