I have been happy with OZ Ultras (14.7 lbs) and BFG 205/45/16 Sport Comps. A little more compliant than OEM on street, and sensible for learning tracking. They have one more trackday in them, after 8 this year and over 10,000 street miles.
I was going to try the RE71's, they are clearly the best streetable track tire available. Maybe Mercdank will report their performance for him. I decided to wear out another set of tires before stepping into the best shoes available.
Probably try BFG Rival 215/45/16 next. Santa is bringing me a Cyborg, need a little more rubber for the new year.