Not sure what the most OS disc is. The most OS disc I've ever tried out has to be a 175g C-PD2. OMG that thing is ridiculously OS. I tried so hard to get this thing to flatten out and fly a little but it would dump every time. I've been able to control every brand new max weight Destroyer I've and this thing just laughed at my efforts. Found it to be completely useless. Maybe Avery could muscle it to some use but not me.