Dear @parrotbee : You are rigth. From some years now exist several truly expensive LOMC cartridges ( over 5K-6K prices. ) that use the DL 103 cartridge motor with different build materials in the body, cantilever build materials, stylus shapes and kind of wire in the coils but the " motor " is the one by Denon.
As I said I still have the venerable 103 and between other of its brothers the 103D that's good performer and competitive with today higher price cartridges.
@vpi move with the 103M was and is really worth to do it and he knows by the rewardings he is achieving in quality level performance.
I own and owned several Denon audio items: TT, tonearms, cartridges, electronics, etc, etc, and never found out any Denon audio item where I can say: that is a bad item, never.
Now, I have more than " curiosity " about the 103M.
R.