I own 6 Griffin Armament... 2x Recce 7, a Spartan 3, an M4SDK2, a Revolution 9, and a Checkmate QD. They are all well built, and very durable. The Rercce 7 are workhorses and have great tone on my 308 gas guns as well as making my 20" Colt HBAR sound like a 22. I like the Revolution 9 in the K configuration because it doesn't give up much in the db reduction, and it feels much better on the pistol and on my 9mm AR. The M4SDK is built like a tank and looks awesome with all the dimples in it, plus it sounds great. The Spartan 3 is perfect on my SBR's, I think it will stay on my LWRC 10.5". I run it fairly hard, and it is great. it's direct thread and only 12.5 ounces. The Checkmate QD has the 3 lug adapter, and for a 22 can, it's very solid!
My dad has a Recce 7 and a Reece 5, and the 5 sounds great. I'm thinking about their 338 can, because I like the Recce 7 so much, and it's like $800 less than the TB, though I'll prolly want the TB as well.
I also own Dead Air Sandman-s and mask, SiCo Omega and Hybrid, Gemtech Outback 2D, Surefire Socom RC2, and hopefully any day now Sig SRD 556 direct thread, and Surefire SPS300.
I would put my Griffin Armament cans up against any of the others, I'm very happy with them. I would say the only one I'm not super happy with is the Gemtech Outback 2D because it's noticeably louder than the DA Mask, but the Mask kicks butt.
I think very highly of them, and will buy more GA cans when I can
I would say suppressors had me at hello, and I was completely hooked after the first shot out of a 308.
Did you have a specific question? or thinking about a specific can?
Scott