So I took a bag full of Rocs out for an all-Roc round at my local 9 hole to do some testing. I had these:
2016 ColorGlow Champion F2 Lucha (8/10)
2017 Champion Thrower (10/10)
30 Year Anniversary Luster (10/10)
1 KC Pro (9/10)
1 slightly used DX (8.5/10)
1 beat DX (6/10)
1 beat R Pro (172g) (6/10)
1 very beat DX (5/10)
In order of stability, I'd rank them thus:
1. 2017 Champion Thrower
2. 2016 ColorGlow Lucha
3. 30 Year, KC Pro, slightly used DX
4. beat DX, beat R Pro
5. Very beat DX
The 2017 Champion Thrower surprised me by being very overstable. It handled all the power I gave it with aplomb, even flexing out of some shallow annies at ~80% power to still finish hard left. I threw it on a low line hyzer on hard ground at one point and got probably a 25 foot left skip out of it, which isn't usually a shot I would throw a Roc on, but it worked out well. It was noticeably more overstable than the 2016 ColorGlow which has been in my bag in the overstable Roc slot this summer.
The 30 Year Anniversary Roc flew just as described by someone else recently in this thread. It was like a lightly seasoned KC Pro or DX. It had just the smallest bit of flip or turn at power with decent glide and a strong fade. It routinely ended up in almost the same spot on the fairway as the lightly used DX and KC Pro I was throwing. Nice disc if you want that flight in something that will keep it for a long time.