I'm looking to buy a Silencer Co Omega for use on a 9mm pistol (and nothing else). It seems there are 2 opinions on which one to get. Silencer Co makes Omegas for both 9mm and .45. Some say the .45 can has a deeper more pleasant sound when used on a 9mm gun, but according to SiCos numbers on their site, the 9mm version suppresses better. What are the opinions from those that own something like this?