I have an old, first run QMS (PDGA Appoved, old QMS throwers know what I'm talkin about). I picked it up used at a PIAS in Charloote, NC. Origianally double-stamped with a Shark stamp and a QMS stamp. Both stamps have long ago been removed.
I've had five "field Aces" (throws of 150' plus that go in) with it and it's just money for me.
It's tha oldest disc that I still throw.
You throw it straight, it goes straight, but don't overpower it.