Autobahn... good sturdy urethane with a nice slip to grip ratio.
Bones Street Formulas (STF)... super good slides, hard to flatspot, but if you do, you can actually "ride out" the flatspot and get them round again.
Bones Skatepark Formulas (SPF)... same resistance/recovery from flattys, but with more grip than the STFs.
On the negative side:
I have yet to own one pair of spitfires that has lasted longer than two weeks without having huge flatspots.
But the worst by far... Popwar has some wheels that are guarunteed not to flatspot... I picked some up and in less than an hour they were practically unusable (I do a lot of reverts on concrete transition). Anyway, I tried a second set, and by the next day they were crapped out. On the plus side, they'll send you new ones for free if you mail them in, but the formula they're using is crap. I don't know of they still market them or not.