The main differences will be the quality of the rubber (Jody and Ralph import theirs from Germany), and the quality of the hand-finishing of the facing (Jody's will likely be better finished than the Meyer, and Ralph's will likely be the best-finished of all three).
That said, if you're happy with your Meyer, imho you probably wouldn't notice much more "oomph" between them. Nuance, yes; oomph, no.
That said, if you're happy with your Meyer, imho you probably wouldn't notice much more "oomph" between them. Nuance, yes; oomph, no.