Thinking about a SLR Sentry 7 set screw adj gas block to fit under a Midwest Industries Combat handguard. This is just to tame down an overgassed carbine. No suppressed shooting... at least not at this time. Reading some of the positive remarks here I'm guessing that folks using SLR adj are still generally pleased? Cons?

Also considering a Back River Tactical "port" that somehow installs in any regular non-adjustable low profile gas block. Seems simple enough which might serve my purpose of reducing gas a bit rather than fine tune. Any experience with these?