I got out for a short round with my Studs today. I have to say the disc surprised me a bit. Both Star and DX were much more overstable than I thought they would be. For everyone comparing these to the proto Colt mold, sorry, but these are seriously NOT that disc. I have a dozen or so proto Colts, all in XT (which was generally more stable than DX). I think I can definitely say that DX and Star Studs are more turn resistant, have less glide, and fade harder than any proto Colt I've thrown.
Interestingly, I was expecting the Star Stud with its extra dome to be the more overstable of the two plastics, but mine definitely is not. When thrown with 75% power on a hyzer line, the Star flips up more and fades less than the DX. The DX had pretty much no turn or flip up whatsoever and a pretty dumpy fade. They also don't have nearly the glide that my XT proto Colts have. Distance-wise, the DX and Star Colts were going about the same distance, probably about 275 is as far as I pushed them. The Star was just ending up a little straighter and the DX further left (RHBH), but the Star didn't seem to pick up much extra distance. Proto Colts are pretty easy for me to push over 300 and I don't feel like the Studs will go that far until they get beat in a bit. I think the DX Stud is honestly more overstable than a lot of DX or KC Pro Rocs I've thrown out of the box, which is not what I was expecting out of it. I can still see the Stud being a pretty useful disc. It might slot right in between my DX Rocs and Pigs in terms of distance and stability. It's not bad, just not exactly what I was expecting.
My flight numbers for these (for whatever they're worth):
DX - 3.5 3 0 3
Star - 3.5 3 -0.5 2