knettles
Double Eagle Member
I have had a star Aviar P&A, and I do have a champion Aviar P&A, and they are the same stability as a dx Aviar P&A. Actually, when thrown on a drive, my champion Aviar is much less stable than my dx. Both are pretty much seasoned the same.
Conventional wisdoms would say the premium plastics would be more overstable, but that isn't what I have found.
I don't know what's up with your discs, but the Star Aviars are almost always more overstable than the DX Aviars. I haven't thrown champs, but I've thrown multiple DX's and multiple Stars. It's the same reason all other discs in DX are more understable. The rougher plastic has more air friction which causes more high speed turn and a slower fade. Science!!
(As far as putting goes, the differences are much smaller.)