There are only three dampers I run. None of them are rubber band (elastomer) types.
Why you ask? Because they have the most narrow dampening range of all of them.
It’s fine if you are running a very narrow rpm range, but if you want the most effective dampening across the useable rpm range then a rubber band damper ain’t it.
Plus if you are buying an elastomer damper, ask them at what rpm range and what bob weight it’s tuned for.
They will say “it’s tuned for best average” or “it didn’t really matter”. I had that argument with ATI in the mid 1980’s when the tech guy tried to tell me his off the shelf damper was tuned for a 4 inch stroke at 6500 and a 3.313 stroke at 8500 with aluminum rods.
That’s straight horse **** right there.
I use in no particular order:
Innovators West
TCO Rattler if you can get one and if you don’t mind every slap dick no it all bubble gummer whiz bang in gym shorts telling you your engine is about to explode when you shut it off nonsense.
Fluidamper
I’ve tested the Fluidamper to 8500 short with a 4 speed and never cracked a crank and every now and then when I had a few extra bucks I’d shift it at 9k.
Even Chrysler tested the dampers and you can read about in the engine book.
Number of end users is not a good metric for how something works