Low Back Pressure 11.5" 556 can

I have an AR15 SBR 11.5" with adjustable gas block. Goal is low gas with great sound suppression. Cans of consideration:

Exigent Fireteam 556

SilencerCo Velos LBP 556

B&T 556 Print-XH RBS Full

Echocore Sector 556

HUXWRX FLOW 556 (least favorite)

please help.