The spros are nice as well. They are tiny. I have used them inshore to connect flouro to braid in order to prevent twists while working plastics for reds and trout. Although, I have not used anything heavy.
Sampo for snap swivel. I have some that are about 20 yrs old still new unused. Oshmans had a close out where they were about 20 cents on the dollar.
$40's got me a grocery sack full of quality snap swivels.
In that time none has ever failed.
I also try to use the SPRO wind on barrel exclusively for short leader connections.
I don't wind them on but like the strength to size, weight and Dia.
haven't found them discounted yet so my current supply is most likely
Some times Bottom feeders even go hungry.