T L R, it's obvious you've had a bad time and experience with the Hex Wasp RDS. I can't make that right for you but I can maybe ease it just a little.
I bought one of the very early Wasps not long after they came out, but didn't install it for a good long time after receiving it since I already had a "Shield" SMSc on my Hellcat. I just sat it up in my safe until I felt the need or impulse to put it on my gun. Well, time passed and it still sat in my safe.
Then after it (the Wasp) had been on the market for a year or so it seems folks started reporting lots of problems with the Wasp in that they were killing batteries left and right, and nobody seemed to have an answer for a long period of time. But we must acknowledge that was right about the time we were going into quarantines, all work forces (R&D'ing, designing, manufacturing, shipping, etc) were undermanned and/or shut down, and supply chain issues were bad all-round. I became a little concerned that I may also have a battery killer in the safe and that after so long a time if I had a problem with it I really would not have a legitimate claim to any warrentee.
So in December of last year (2021) I installed the battery (already more than a year old) that came with the sight and set it on top of my safe in the brighter ambient light to intentionally cause the heaviest drain on the battery as possible. Now here we are 8 months later in August and the battery is still going strong. With some conversation here on the forum and in several other circumstances, it seems to be and I'm pretty well convinced the early models did not have a battery issue. But that somewhere along the production timeline the product manufacturer and/or specs must have changed for some reason and that is what led to the battery problems. I know we were able to verify some actual physical size differences from the very early ones to those that came a few months or maybe a year later, but no way to know of any design/internal differences. But it seems now that we've seen/heard of far less negative issues of any kind over some time. I can't/won't swear that they've corrected any/all problems associated with the battery issues, but it seems to have certainly reduced the number of actual claims. That seems to have been pretty well agreed to by most I've talked with.
Now it seems, if IIRC, that SA has finally resolved whatever the battery issue was and is rolling out functional replacements, albeit slower than most would prefer, with whatever corrections were required to make them a reliable product. I took time to write all this to you to simply say I honestly feel the Wasp is now a reliable and functional RDS at a reasonable price and in my humble opinion would not be a bad choice. Yes, you might still get one of the bad ones, but you likely won't. I would venture to say that if you did it would be more due to the supply chain problems still existing rather than a 'still bad' product.
The Wasp requires no modifications to your gun that may or may not negatively affect the value at a later date whereas some other brands do requires some mods, and it looks great on the slide of the Hellcat. And the fact the Wasp was provided primarily for the Hellcat by the same folks who made the Hellcat itself says something. As good as the handgun is, Springfield Armory would surely not support any product for that handgun that is/was not as good as the gun itself.
I'm not claiming there are no other good products out there and in fact I feel/think my Shield is as good as any. But even now I personally would not have any heartburn installing my Wasp at some time in the near future. In every product investment we find ourselves involved with, we "pays our money and we takes our chances". Sometimes those chances are a little harsher than others, but I really don't think you'd be too far off the mark if you considered the Wasp one more time.
Best of luck in whatever you decide.
