Is there a nice and strong but silent sling swivel out there? I'm tired of the no-name swivels that I've got constantly squeaking on my rifle.

I usually start the season with a “squeaker”! A little dab of grease and “Silence is Golden”! memtb

Quake Hush Stalkers are quiet. But I have not worked them hard, so I don't know how they would hold up long term.

They're not quiet after a good bit of use. Mine start clicking after a while. I've gone back to plain UMs unless someone comes out with something better.

Brutes are pretty good

If you have QD swivels like Uncle Mikes get an O-ring that fits over the stud.

somebody told me that Grovtec swivels are the schitt as they are a direct copy of the uncle mike pattern but made in the usa and all metal whereas unclemikes uses plastic on the threaded collar that pretects the pushpin used to unlatch the swivel. i personally like the old school uncle mikes swivels before they did the threaded pushpin protector and you could just push the pin without having to thread in or out the protector. mine that have this feature usually are threaded out when i look at them anyway.
Big Ed

Put a drop of oil on the pin and wrap them with electrical tape. No more noise