I have run Metzler m-1, Pilot Powers, Qualifiers, Bt-016, Bt-003, and Q2's on the street over the last 8 years. All were decent, but the 003 and Q2 were head and shoulders above in grip. Between the two, Q2's steer noticeably better with my setup and were THE LEAST EXPENSIVE SET OF ALL. If you are like me, the last part is not a minor detail. I have now run several Q2 sets on the street and on the track where I find them absolutely amazing. I personally believe, at this time, there is no better tire you can buy for the money. If you have unlimited financial flexibility, I hear some Pirellis are as good, (maybe even supercorsa "street" or Power One "street" slightly better) but they are nearly twice the price! That's my humble opinion.