I have no experience with the "R" version of the venerable Denon, but the plain 103 takes about 50 hours to fully burn-in, though reported hours vary from 20 hours to 100 hours, probably a synergy thing going on here. And I agree with Patrickamory on the subject of the Denon anyway: it is one of the finest MCs or cartridges of any stripe available, period, full stop, the end. It's bass, sense of rhythm and timing, palpability, vivacity and most of all gestalt/"organic wholeness" is right up there with the very best, if not better. Can you spell "M-U-S-I-C"? Detail isn't everything. As for the theory that a conical tip precludes detail, one has to hear a Denon on a top-flight 'table to hear what it can REALLY do, which, due to price, is a very rare occurence. Though it may not be state of the art, one would never guess in a blind test that one was hearing a conical tip, and it easily bests most if not all MMs in this category in my experience, and I'm a very serious self-avowed MM-man. All kinds of theories/myths out there which are just waiting to be verified by experiment ;-). So play that baby on something serious if you have the chance, and it appears you do, Larry, and trust your ears, you'll have an instructive blast!