Great photos Dwayne. They really tell the story. Look at the offset between the Z's and the others. The Z's have less. Size is the same as the MR-23's and the underlay - Same, Forging - Same, Finish - Chrome for the Z's although they used to offer the Satin. Forgiveness - Edge goes to Z's, Distance - I've found the Z's to be longer. Feel & Sound - I give a slight edge to the MR's on this.