I have a .30 cal Titanium Jet, and I have heard several other cans, including the Jet, SRT and the SWR Omega side by side. The titanium resonates a little differently as above stated, but it most definitely isn't louder. In fact, with 9.5 grains of Unique in LC brass, and a 180 grain SMK, the sound is simply a robust firing pin noise, a little whizzing noise and SLAP of the bullet. Very impressive.
The Jet is certainly lighter, and thus, there is no discernible POI shift with my rifle. I have a custom 22" Rock 5R. I am actually very happy with the can, but alas, I too was somewhat disappointed at the delays we experienced when "waiting for ATF approval." Strangely, the paperwork, took several months when we all know that Form 4 turnaround time has improved to mere weeks since the office moved to Atlanta. I filled out the paperwork, and left it with Debra but they didn't send it in for a month after that
Anyway, they were very nice, friendly people to deal with, and I live in South TX, so the proximity made them accessible to me. They now have a new shop and new CNC machines. I can only hope they'll get better with their turnaround time.
I think they make a great product, but they just have a poor sense of timing and they probably accept more orders than they can reasonably fill.