I'm not a collector by any means, but I have one disc that I hang on my bedroom wall.
It's a Z Tie Dye Cyclone with a silver stamp from Bells Brewing Company. (they make awesome beer, and they're somewhat local for me)
I have no idea how many there are out there, but I found it at the bottom of a lake.
My bro in law has a disc up on his wall from his first ace. I dunno if I could do that, I intend to keep throwing whatever disc I use for my first ace