All of those are great, check out the YHM Resonator. Fully welded, tubeless design. Great QD system, and the mounts are cheap compared to other companies. Mine has a POI shift on all my rifles (but all suppressors will have one, you're hanging a 10+ ounce weight to the very end of your barrel), but the shift is repeatable. It's the same shift every time I put it on, and accuracy is the same whether its on the gun or not. Rated for 300 RUM, full auto rated. And its super cheap. I highly recommend it.