Well, my advice is to save up for the TBAC. If you really want a fine can that's not too costly, then look at Elite Iron. It's sorta like a TBAC but made out of 316SS. The owner, Dave, is a metallurgist by profession and knows what he's doing. Several alphabet soup agencies use his stuff. I have one in .50bmg and it's really nice and one in .338LM I haven't used yet (need a rifle!).
The TBAC is the best of it's type and it's quiet and lightweight. Best CS in the business, they're always on here answering questions, usually the same ones over and over and they treat it like it's the first time, every time. Amazing people. They squared me away when I bought a can literally days before the new Ultra model came out but wasn't told. They sold me the new one for, a 6.5 Ultra 9, and I love that can! On a 20" Grendel there ain't nothing like it! I got a .30 Ultra 5 too and for a short can, that one comes out on top. Super light and it takes noise down to technically "suppressor" level and not just "moderator" level like most shorty cans. The 9" has just amazing performance and the older 30CB9 I have still takes the noise down less than anything else I have. The thread over mounts are IMO some of the best out there and why I went with them in the first place.
Elite Iron uses a similar thread over brake like TBAC. It's those style mounts that have the fewest problems. They're basically like direct thread but better. So Elite uses SS but the weight isn't out of control like you'd think. It's still heavy, but it's not like a brick. His .50BMG can for instance, it's 4lbs., but some mfg.'s titanium cans literally weigh 4lbs. Their solid. He also sells the mounts or direct thread models indexed TDC to your rifle. If it's going on a mount, he can do it, if it's direct thread (like mine) he'll send a thread on collar that you mark TDC with and he'll make it happen. That gives you repeatable and consistent vertical POI shift. I also had a brake made (he makes the McMillan brakes and mine is the same) that indexes without the use of shims, so the can and brake can be changed in the field easier. Does excellent custom work. Any color Cerakote like TBAC. Costs significantly less due to use of 316 vs. Ti.
If I needed a quality suppressor and I couldn't afford the TBAC, I'd definitely be going with Elite Iron then. They were also my top choice for .50BMG and they still costs half as much as the competition. Excellent workmanship, CS (if you need it) nothing but good to say. This isn't a budget choice either, these are very nice cans and happen to cost less to make than a Ti can.
Those other two you mention, never heard of 'em. The above two will be around, ain't going anywhere. Both have contracts to fill and service.
