Sorry, I don't know R. Murphy.
Bear is hit-or-miss. Ditto Case.
Great Eastern is great, Canal Street is pretty good, and you can't beat German-Made Boker pocketknives for the money. I also like Queen and Schatt-Morgan, especially the File & Wire series. The imports from AG Russell are getting very high review scores, as do the Rough Rider imports.
Is there a particular pattern or material you're looking for?