I run the superbike pro's for trackdays. IMO they are the ideal compromise between cost, stick, and longevity. The feedback is fantastic, they feel very similar to the supercorsa's and superbike's. Very forgiving deep in a corner. When they start to slip, they tell will start to warn you without a sudden loss in traction which is nice. This is running mid to upper red group.
Here's the down side, they say you can run them without warmers, which you could, but personally I would not want to. They take longer to heat than street tires, you'll waste enough time and rubber getting them up to temp. When they are hot they are fantastic, but they can be a bit slippery (as expected) when freshly cold. I'd also watch the heat cycling of a race tire w/o warmers, you will harden the tires before wearing them out, especially if your not running them aggressively.
The superbike pro's are my favorite track tire by far. It takes a certain pace on the track to actually need a race slick. I used Q2's up until lower red group which are a fantastic tire at a very competitive price, heat up fast, don't need warmers, etc. Diablo Rosso Corsas are another favorite street tire on the track, but I'd have to give the edge to the Q2's in the price category. I'd consider the performance street tire route instead. Race slicks will add extra safety margin when your running a quick pace, but can be hazardous when cold or harden prematurely not using warmers.
I don't buy race take offs, so I can't help you there.