The original Contis had about 23,000 miles on them before I got sick of them (and one tire completely worn). I got PS2's installed in October 2008 (rears) and they lasted about 10-12k miles (the Dragon and mountain driving will wear them down!). I currently have General Exclaim UHPs on the front and back. The fronts have over 12,000 miles on them and I would say that they are about halfway worn. The backs are fairly new with ~3000 miles.

I loved the PS2s for their traction, but at $400 a pop (rears), they are just a bit expensive for the mileage that you get from them IMHO.