I read that entire thread before I used them for my first purchase (two Banish 22’s).
With Silencer Central, I started the process July 12, added a couple of weeks of my own delay due to moving and needing to get the fingerprint cards back to them, and expect my suppressors delivered to my door next week. Apart from my own delay, the local law enforcement notification process has been the hang up so far. They could probably streamline that part.
I used Silencer Shop for my second purchase, a Scythe Ti. I had to drive more than an hour to get to the closest store. I started that on September 19. I’ll see how the process compares.
Until I have them all in hand, I don’t have anyway to compare them except Pew Science.