Silicone vented stopper (airlock)

Anybody use silicone vented stoppers?..Im thinking about getting a few cause im tired of suck back

Yes, they are fine for carboys for aging once primary is over. Probably work for primary as well. I have used them for many years as needed for when I’m laving things in a carboy for extended times.

On the other hand, if you are getting suck-back I must assume that your wort is still cooling at the same time your airlock may be overfilled. If you are using a blowoff tube, just keep it above the liquid until the temp stabilizes to eliminate the suck-back.