I don't fall into either of the categories. I've had a misfire with both. Many on this forum have experimented with many primers, sabots, bullet combination with BH209 to determine if they would misfire or not. To test to the limit, it needs to fail, and so almost everyone who has done some experiment has had a misfire or two.
Hunting wise, I've have had ONE misfire with my omega. I am not blaming it on the gun at all. I loaded up to go hunting, short black harvestor almost fell down the barrel. Didn't think anything of it. Aim at deer and the normal kaboom, was replaced by a ka........................boom. Delayed hangfire, No deer. I should have shot that load out. Clearly there was an issue with the sabot.
Also had a misfire hunting with Knight Disc Extreme using FPJ. Issue was the breach plug had ~25 shots on it, with no cleaning. Simply drilling out bp with a drill bit fixed the problem.
The key to BH209 success is having a tight fitting bullet/sabot combination. Any of the new TC's should have no issues, and the Knights with the FJP, on non FPJ should be just fine to go. Hot primers help, but aren't necessary. I've used regular CCI in the omega and Fed 209A in the Knight, because it has a longer flame channel to the powder. Don't know if I need it or not, but it works for me.
You might want to wait until the new Knight Ultimate Slam comes out, or go with the Triumph, or Omega. All will work wonderfully!