I shot my OGL this weekend. It is one of the giveaway OGLs that I believe is a prototype that they tweaked very minimally before officially launching. I was shooting it on my 20" 284 Win. My dad was shooting his 21" 284 with the old style Nomad ti. We also had a scythe, and a diligent defense enticer S, but on different smaller calibers.
The Scythe and Nomad Ti are quieter than the OLG. Not much but enough to notice. The enticer s is my least favorite can of the 4. It has a very tingy sound to it that really annoys me. It might meter at a lower decibel ( I actually don't know if it does) but I don't like it very much.
Of the 4 cans the OGL is the only one that I actually like that hasn't had a history of failure. Only being 4 inches in front of the barrel is also a HUGE plus for me. The only real down side for me is the weight. It sounds like UNKNOWN has figured out they can make them lighter and still very durable. I think if they could get it down to 10/11 ozs it would be really hard to beat.