I’m liking my GSL Technology GT-MAG 350 Legend can. The website doesn’t list exactky that description, but their GT MAG is available in several calibers. https://gsltechnology.com/product/gt-mag/
I use it on my 12” barrel. It produces a nice mellow sound. I haven’t noticed much first round pop, but I also always shoot with ear pro unless hunting.
Accuracy is good, although I haven’t really shot for tight groups. At 50 yds I’ve seen .75’-1” with fast-ish firing and a 5x Leupold scope
GSL is somehow connected to / grown out of Gemtech; I think the GSL main guy was once building and/or designing cans for Gemtech. Others with better info could chime in and ‘splain better.
Rugged Obsidian 9 and 45 are both rated for (16" minimum) .350 Legend supers.
I recommend getting the .45 can, and you can use it on pistols, as well. From the tests I've seen, it meters as one of the quietest 45 cans on the market.