One of the better all around tires I have found is the Kuhmo's. They are very good for all around traction and they last quite awhile and are one of the cheapest high performance tires out there. And too, how can you go wrong with a tire that says Supra on the sidewall?
I used to have bridgestone potenza RE-730 GEN II (before the crash) they were a great tire. not horrobly expensive about 110 a tire didnt have them long enough to find out the treadwear, but they gripped great and were awsome in the rain
I like the BFG KD. They are the best street rubber I have ran. The only bad thing is that they DON'T like rain. The S-03 are also very good. Kuhmo is great cheap tire, I will run the 711 instead of the 712.
If you plan on doing 5 or more autocrosses per year, I'd buy separate R-compound tires and a spare set of wheels. In my experience, khumo victoracers have a longer competition life than most street tires (if you care about being competitive), while not costing much more. Reason being is most street tires get hard after extreme heat cycling, and loose their competitive edge even in street tire classes
For excellent wet traction, decent dry, and great tire life -- khumo ecsta supra 712's are hard to beat. And no, khumo doesn't pay me... anymore
Had the older S-02, older comp TA's, Dunlops and then a few others I try to forget (Pirelli...what hunks of shit). Loved many of them, until I met the bridgestones...whole new world of grip.
I run Pilot sports now..and you'd be hard pressed to get me to change, outside of the S-03, unless of course Michelin keeps jacking the price on me. I've never had grip like this on a street tire. Wet...nothing holds a candle, and great dry grip. The KD is untried for me, but the extremely poor wet manners I keep hearing about negate any slight dry drip advantage they offer (though if anyone wants to send me a free test set in 245/45-16, I'll be happy to put them through the paces).
Michelins are a bit better wet tire than the S-03 from what I've seen, and the Bridgestones are a little better dry.