Honestly, get both. Not just because more is better 🤣😂. You're getting too fundamentally different shooting experiences with the two suppressors you mentioned. With 22 you can have the spooky silent experience, which is really neat. Especially if you put it on a bolt action rifle. My buddy and I were out at the range recently and it was quieter than a normal volume conversation. 556 is supersonic, so it's not going to be quiet per se, but it does dramatically improve the shooting experience. You'll still want hearing protection on if you're the one shooting, but when my friends shoot suppressed 556, as long as I'm 10 or more feet away, hearing protection is optional. If you insist on only getting one, get whichever one you shoot more. My intention is to convert as many of my weapons over to suppressed as possible. It's just more enjoyable to shoot suppressed. Kind of makes me angry, because if the NFA hadn't included silencers for the last hundred years, it's crazy to think of how much quieter all firearms would be in general as suppressor technology would be incorporated at a base level. Oh well, at least now that can happen.