well i've been using Federals for some time now. the 595 for street and the 595 RS for track days....
Federal 595 (street)
Dry: 7/10
Wet: 8/10
Value: 9/10
I bought these through a friend in tyre industry, even though i got a discount, they are still a hell of a lot cheaper than other brands for the same kind of tyre. these are the top-of-the-line street tyre in the Federal range, which is one below the semi-slick. when i 1st got them, they weren't that great, but once they wear the top layer of rubber off, they are just awesome! however, once they reach their peak, they drop off quite a bit and you dont have the same amount of grip again, but for the price, i would definately buy them again. i paid around $600 for a set of 4. (Front: 235/45/17 - Rear: 255/40/17). "regular" prices i've been told aren't that much more expensive....
Federal 595 RS (semi-slick)
Dry: 9/10
Wet: 8/10
Value: 8/10
I bought these from the same friend, but he couldn't give me as much of a discount as with the others. these are the semi-slick version in the Federal range. i bought these recently for my track day at Wakefield last saturday, and i gotta say that i had so much grip that i didn't know what to do with it!!! i had them on the car a few days before so i could wear them in. i used em in the wet and dry and was surprised to find that they had extremely good grip in the wet. i paid about $1400 for a set of 4. (Front: 235/45/17 - Rear: 255/40/17). these tyre's are supposed to be good for about 10,000 km's or more. i'll definately be buying these again.....