I had a big king straighten out a Cabela's snap swivel years back and never used snaps again. All my swivels are Cabelas or Bass premium coast locks or cross locks with welded rings and Spro swivels for the river. No swivel equipment failures.
I'm interested in the comment about the radius of some coast/cross lock swivels limiting spoon action. I hadn't thought much about it and can't say that my hooked to landed ratio has really changed much since switching. I do know that it is somewhat more difficult to attach some SS and other spoons to coast locks because of the angle of the wire, but a little pressure to open the lock a little and you're home free.
Just continuing to look for things that might help to "even the playing field" between man and fish! HA!!!