In a related thread I had asked about which suppressor would be best in 9mm between a SWR Trident 9 and a Gemtech. I think I jumped the gun (no pun intended) and should have thought about it a bit more. I was wondering between 9mm and .45, which one would be better as a first suppressor? I'm looking at the YHM M2 Cobra in 9mm and .45 because there is a local dealer who can get them cheaper than I can find other brands of suppressors. I see a few pros and cons for each: With the 9mm, I have more platforms to use the suppressor with (G17, G17L, 2x G19, G26, G34, Sig P228) but there is the caveat of having to use 147 grain/ subsonic ammunition to get the most sound reduction from the can For the .45, the 230 gr. round is already subsonic, but I only have one weapon to use it with (G21). So, with all of this in mind, any suggestions or first hand experience from those of you with suppressors? Much appreciated!