Not everyone likes 45AARP. Plus the 45 options are larger. Size can be a concern depending upon the intended use of the can.People say that but it always gives you the options. Just change the front end cap out for 9mm.
I’ve got an Octane9 and it’s been great for 9mm and 300aac subs.
Currently shopping for a new 9mm can myself for my CZ Scorpion SBR. Something a little shorter than the Octane.
Wanted an Omega 9k for a long time… but lots of similar options now… some that can also do 5.56… though not a need for me. Wolfman is also a consideration… but have some reservations of Dead Air as a brand with their recent issues.