I bought a Glow Grackle today from my local pro shop. I had heard that it's a little more overstable in the glow plastic.
Grip and feel is good. No flashing or sharp edges. Not as grippy or gummy as champion color glow (my fav plastic), but maybe a hair grippier and gummier than Neutron/Apex.
Glow performance isn't quite as good as my Eclipse 2.0 Reactor, but it sustains the glow for a long time. If Champion color glow was a 4/10 in glow performance, and the Eclipse 2.0 a 10/10, then I'll give this an 8/10.
Rim measures in at 17.8mm, just like a Teebird/3. The inside of the rim might be a little plussy, as my micrometer didn't quite rest flat on it as well as the Teebird3 I was measuring. It definitely doesn't feel plussy like an Undertaker though. PLH is same height as a Teebird.
Flight wise, this are very Teebird like. I'd liken it to a Teebird after a couple months of seasoning. I'd rate as 7/5/-.25/2. It has the most miniscule amount of drift to it if thrown flat, and a solid fade at the end after pushing forward for a long ways. It's actually very similar in flight to my personal favorite, the Barela Color Glow Teebird3, which is a little more mellow compared to a traditional star Teebird.
The Glow Grackle is an amazing disc in flight, and also very good in glow performance.
I quickly scanned through the topic and noticed some people mentioning that this seems faster than a Teebird/3, but I don't really see it. Rim is the same width, and nose is slightly blunted. It's definitely more on the Teebird3 side of things than a Teebird, as the flight plate is a little flatter. which is why I think a Barela CG Teebird3 is its closest comparison.