I like Proline Bowties, Crimefighter, Holeshot, and AKA Citiblocks (havent tried the other AKA tires). The PL tires are good but the foam sucks, the tire will have plenty of tread left but the foam will be flat. The Citiblocks I have are 3 weekends used and still feel like they did straight out of the pack, but they are just about used up.
I got a chance to run my M3 Revolvers on V2 wheels yesterday. Very good tire for the condition the track was in (hard as a rock with light dust in the racing line). I will get another set of them but I wont use the PL foam again.
Couldnt tell you how much time racing I get on a set of tires, I dont really keep up with it. I just buy a new set whenever the ones I have are used up.
Whenever I put a brand new set of tires on the car I label which ones go where, like RF RR etc. That way I can rotate them between races. That really helps your tires last.