I was leaning toward the osprey hard for a while, but I want it to be user serviceable also.
I really do appreciate the help and opinions guys. Ya'll know how it is, can't just run to the local gun shop and finger one at least not where i live.
That's a good call. Imo, even rifle cans should be serviceable these days as we're long past the dogma of "cans clean themselves".
Not being able to shoot them before buying definitely makes it harder. Even if you could trust suppression numbers were tested on equal footing (which they are not); what looks good on paper doesn't always equal success in the real world.
I certainly haven't shot all of the options available, but of the ones I have my thoughts are...
If the Osprey was serviceable I still think it's among the best options available.
The one I would have never even considered until I saw it in person was the Bowers ASP. Still too fat, but dang that thing feels like a feather despite not being a small can. Too bad it doesn't have a Neilson device so it's a really a 45 only can. Despite being so light; the ASP with 9mm would not cycle reliably enough for my tastes. Maybe it would be fine with +P, but I didn't have any with me at the time.
I really liked the Odessa 9, only handled it one time, but I liked it so much I have one sitting in jail right now. My opinion may change with extended use, but my initial impression was very positive. Probably, doesn't do you much good though since you want a 45 can.
For what it's worth, to my ear (no fancy meter to test against) the Obsidian is at least as quiet if not quieter than any pistol can I've shot. The Ghost is a nice suppressor in it's own right, but shooting the Obsidian and Ghost side by side I would go Obsidian every time. If you can handle the weight and width it's a very well built can. It just turned out that the quietest wasn't as important to me over the long run as I thought it would be when I bought mine.