I doubt you can get an objective answer to your question from this forum. :hmm: Because everybody here is in love with Jim Chambers! And, rightly so, if everyone you ever dealt with was Jim Chambers, there would be no trouble in the world. :thumbsup:
I don't have a Deluxe Chambers on anything but I have one in my hand. It is oblivious it is a fine lock. But the folks at L&R, like Bill, are good to deal with, too! I don't have the L&R lock you are asking about at all, but I do have several of the replacement L&R locks. The roller on the frizzen is a gimmick, in my opinion. :grin: If you don't know it's there, you won't know it's there! :shocked2:
The thought of a main spring being too strong is also largely a myth, within reason of coarse. I have messed with several main springs and messed up several main springs. :redface: Learning the hard way!
And, the correct answer is, they both work, but the Chambers is the better lock. :wink: