and Muir are the best, but are the most expensive.
The thin plate Stainless steel
, generic versions seem OK, but I have some lingering doubts if they could bend and jam under extreme conditions which would be a nightmare.
As suggested by the previous poster some rope
and chain hook, or even better a soft shackle is cheap
and with the latter option it can always be cut. However these don't grip automatically like a chain stopper which acts as a one way valve like a rope clutch
. This is very handy if you have to lift