That is an ongoing debate here. My L&R 'Classic' is one of the finest locks I have ever seen. And, I have had Silers and Haddaways.
My Davis lock is one of the sorriest I have ever seen or used. And, I have had CVAs and other low-low cost imports. It is right down there with the worst of them. And the one I ended up with was the best of five in a long-long exchange of calls, letters and locks with the Davis company, including an "upgrade" cock/hammer.
Never owned a Chambers but their reputation is very good.
Others will give opposite views on the Davis vs. L&R debate.