i have tried tons of different "junk" tires and a few very good summer performance tires. all these tires have been driven on rims on my FD save for the rt615's (read below). the kdw-2s were on my FC in the USofA and on my FD here in Japanland.
the track events i go to are similar to Autox, but our average lap times are around 1 minute give or take and we do at least 2 laps, sometimes 3. tires get heated up much more than at a typical 1 lap 45 second autox.
Neova AD07 -- awesome tire. Great dry grip, good wet grip. they wear evenly. they dont get greasy after getting heated up. only problem i have is that they are QUIET!!!! at their limit. I like noise from my tires so that i know when to back off. BONUS -- they smell good when the tires are spinning and the smoke is billowing.
Potenza RE01-r's -- another amazing tire. awesome dry grip (MINUTELY) less than the ad07's. wet grip is a bit better (IMO). a bit noisy during normal driving. they love to talk to you at the limit. they dont smell as good as the neovas. they dont get greasy after getting heated up. BONUS -- tread pattern is wicked !!
Dunlop Z1 Star Specs -- Favorite tire so far. grip as good or better than the above. both wet and dry. they talk at the limit, which i like. they dont get greasy after getting heated up. BONUS -- MUCH cheaper than the ad07s or RE01-rs. i paid 136ish for 245 45 17 and 165 ish for 255 40 17. compare that to over 200 dollars per tire for both the neovas and the potenzas. i have 5 track days and 5 or 6 months of daily driving on them and they still have excellent tread.
RT615 -- i havnt driven on them, but everyone i know says that they get real greasy when heated up. they also have a shitty treadwear rating.
BF Goodrich KDW-2. I dont like these tires at all. i had them in 18s on my FC and then on my FD. they are decent for the rain, and provide a good amount of grip dry but they are JUNK compared to the first 3 tires i described above. when heated up they get real greasy and they chunk very very badly. the entire center ripped out of a set of tires i had and there was plenty of tread left. i will NEVER buy these tires again.
you didnt have my favorite (Dunlop Z1 Star Specs) so i voted for number 2 -- bridgestone potenza RE01-r