I ended up buying a set of four Bridgestone RE-11A tires.

They generally test a tad slower than the the top performers in the Extreme Performance category: the BFG Rival and Dunlop ZII. I chose the RE-11A for it being described as a legitimate extreme performance tire that doesn't trade off everyday driveability and comfort to deliver track-ready levels of grip.

Below is my decision making process based upon all the comparison tests my reseach found:

• Bridgestone RE-11A: great all around performance, precise steering response, huge dry grip, forgiving at the limits, safe in the rain, very quiet, comfortable over impacts [for tires in this category].
  
• BFG Rival: I would have bought this one, but it has very poor hydroplaning resistance. I rarely intentionally drive in the rain, but I like to take the car on long trips and I may get caught in a downpour.
  
• Dunlop ZII: I had the predecesser to this tire, the Dunlop Star Spec, and loved them. The ZII is FAST, but the grip is peaky (not forgiving at the limit), and it is LOUD, and HARSH over impacts. The ZII would be awesome on a road course, but not on the actual roads around here.
  
• Hankook R-S3: I had these. Good tires, but need a lot of heat. Better for a heavier car.
  
• Toyo R1R: Too soft. Better for a lighter car. My driving style would destroy these.
  
• Kuhmo XS: Old tech. Good, but not a top contender anymore.
  
• Yokohama AD08: Great dry and wet. I might have bought this one, but reviews say it rides pretty hard compared to the other tires in the Extreme Performance category and they are $200 more per set than the others without any advantage to go with that cost.
  
• Bridgestone RE070: Why so expensive bro? Get the RE-11A.
  
• Nitto: I have a personal bias against Nitto because I haven't been impressed with their tires in the past. I did not see any comparison tests placing them in the top spots.
  
• Continental, Michelin: These manufacturers do not have anyhing in this performance category. Extreme DWs (I have owned these) and Pilot Super Sports/PS2s/PS3s are down a notch.

I have several hudnred miles of mixed street driving on them now. I am VERY impressed. The cornering traction is much higher than any tire I have owned before. The straight line acceleration grip is better too. The steering is very responsive, but is not twitchy. The part is find most amazing is how quiet they are for a tire with this much grip. They really don't make any road noise, even over concrete, tar strips, or other nuissances. They ride fairly smooth and are comfortable over smaller bumps and surface changes, but larger bumps and potholes will definitely hit pretty hard though.