Prisoner's Chain is the best ring in the game. It's not even a debate. I honestly wish it didn't exist. Any player that doesn't have the Prisoner's Chain is at a massive disadvantage until they get it and any build that doesn't have the Prisoner's Chain is just worse than builds that have it.
Eh I'm with the dude who said prisoners chain, at least if we're talking about +0 ring of favor. Haven't tested the boosted ones yet but the prisoners chain totally outperforms the base one by so much that it's hard to imagine even the boosted ones would beat it. It's also a very tiny amount of additional damage. Basically negligible.
Thanks to the fextralife team for mentioning that you might have to put some rings in storage in order to get the Master of Rings trophy. I had gathered all the rings, but wasn’t getting the trophy. I did what the page said, and it worked!