A few observations about Innova glow plastics:
Like all characteristics, Innova's glowyness varies wildly from run to run. Some seem packed with the glow additive, whereas others are much fainter.
It seems like new discs glow the best, and older runs often fade over the years. Leaving a glow disc out in the sun certainly doesn't do you any favors.
Generally, for glow champ, the best glowers are the opaque runs. It's no guarantee. However, clearer "glow" champ is basically never as glow-y as the good opaque runs, from what I've seen.
Color Glow Champ seems to always be opaque and always solidly glow-y. I have several molds/runs of CG champ and they have all glowed very well. So I would say, on average, the CG Champ is the best glowing plastic that Innova makes. Grip is also solid, slight flex is very nice, and they are very durable. Altogether this is one of my very favorite plastic blends for any conditions, especially the pink.
For the naturally opaque blends (DX Glow, KC Glo, JK Glo, etc.) it's even harder to tell which the studs from the duds. Sometimes you just have to get a flashlight and a dark room and see for yourself. I have found the JK Glow to be solid, but that's based on a sample size of 2 from the same run (CFR from late in 2017). Also, note on the KC CG: I have seen SEVERAL of these discs break cleanly in half for almost no reason. They glow OK, but seem to have quality/brittleness issues.
CG star is a new development this year (Philo Destroyers, not sure if there are others?)
I have one and it's OK, but not as good as any of the CG champ I've used.
IMHO, YMMV, etc.