>> I have no beef with DENON, but the AC-2 is still WAY better sounding even in my tone arm.<<
Aboslutely. The AC-2 is at least a serviceable dynamic match to your SME III. The 103R is not.
>>The DENON is quiet (conical stylus tracks way less of the record surface), however. And the bass was always nice. It just lacks clarity and dynamics in the midrange and open extension on top.<<
The 103R is guaranteed to lack clarity and dynamics, and sound dull on top in a very low mass tonearm. Don't use it that way.
>>I liked my old 103D....I was hoping that the "improved" 103r would narrow the gap. I think with what I have heard now, I'd say that the stock 103r is WORSE than a stock 103D.<<
The 103R is an improvement on the plain 103, primarily as a materials and build quality evolution. The earlier 103D was however a *design* evolution from the 103. It was product of an R&D spur for lower mass tonearms taking hold during the '70s, which began with the 103S and culminated with the 103D. Some might say this evolutionary stub ended with the 103M, the last of the high-compliance 103s, but it was different in enough ways to be its own peculiarity. In any case, the 103D is in the realm of latitude to be usable with your arm and sound good. And overall, those of us deeply familiar with it consider the 103D superior to the 103R by a significant margin. A 103R *is not* as good as a 103D, nor should it be perceived as an intended improvement over 103D.
>>I sure do not hear, or agree with the statement that the 103r, "perform better than expected" on low mass arms..I think you can agree with that.<<
That audioasylum poster is knowledgeable and experienced. His reference to 103R usability with "lower mass" tonearms isn't the same as saying "low mass," as in your 5g eff mass SME III. You have to understand his context is posting into a group populated by many who contend you need a minimum 20g eff mass tonearm to properly use a 103/103R. Ed is making the point that there's more latitude than that. It will work with a 12g Rega arm, for example, but that's medium mass. Your 5g SME is too far out of range to be included in Ed's reference.
>>So I have yet to hear a PEEP about what to do other than fan boy the 103r or make it work. I don't WANT to "make" the 103r work.<<
I've given you two specific suggestions that will work well in your arm, and give you the essential assets of your AC-2 and Denon tone density: the higher compliance Denon DL-304 and DL-S1. The DL-S1 plays in the bigs. You might also try an Ortofon Cadenza Black. If you get open-minded about upgrading your tonearm to at least a medium mass, modern-bearings device, ala a Rega RB1000 or similar, the 47 Labs MC Bee should nail the sound you seek - just not in your SME III.
Phil