I switched from the M/T streets to the QTPs, because Hoosier recommended not running tubes.(which I didn't anyway). The mickeys would only hold air about 2 weeks, and the Hoosiers never lose any...in fact my dart has been parked for over 5 years, and they still have 15 pounds in them.

I've heard that the newer M/Ts might hold air tubeless now, but this was about 10 years ago. Also, both seemed to have the same grip for me, but neither like the slightest hint of dampness for street driving! The M/T drag radials do pretty good for me in the rain.