Folks, we have been over this. The Groove problem is that it has no tell. All discs are inconsistent, but if you throw them you learn what to look for. Katanas for instance...you look for dome, avoid the flat ones. You get comfortable buying them once you figure out the tell. Between dome and PLH you can figure out what you are getting most of the time.
Grooves? No telling. Nobody has ever been able to pick up on the pattern of what to look for. So every disc is an adventure, no telling what you are going to get. If anybody really wants to rehabilitate the Groove, figure out the tell is. What can we look for in one that makes one bomb, another flip helplessly and another dump in a glideless hyzer. Figure that out and we can stop ripping on it.
Until then...