Dear chakster, You changed the question . The question was or
assumed to be about sound not styli variations.
everything can affect the sound quality: mass, length, shape, mounting method whatever ... you name it
Whatever the stylus shape or cantilever material they all need to be glued or fastened into cantilevers and glued into joint pipe.
stylus gluing is the worst method
whatever retipper mount to the joint pipe will change mass, resonance etc ... if it’s not the original parts choosen by original cartridge designer, those aluminum cantilever used by Ikeda is not available today, it can be only different aluminum cantilever (or completely different material like boron and others)
As you I also admire Takeda’s Miyabi and Ikeda’s FR-7fz. Both
with aluminum (alloy) cantilevers.
I admire ORIGINAL design of the cartridges i like, if i don’t like the cartridge i will never retip or refurbish it (pretending for upgrade).
I’ve heard some great MC cartridges with aluminum cantilevers such as Ortofon SPU Royal G mk II with Replicant-100 stylus, Miyabi MCA and Standard, FR-7 and FR-7fz ... even MM cartridges like all Stanton Pickering (they are all with aluminum cantilevers). All those aluminum cantilevers are different when i look at them under my macro lens, all diamonds are different (the Replicant-100 is huge, the Miyabi’s PH Semi Line Contact is very small, Stanton/Pickering’s Stereohedron is somewhere in the middle ... they are all press-fit which is great). Anyway, this is original design and they are all spectacular cartridges, i wouldn’t change anything in this design.
My philosophy about vintage cartridges is something like this:
Stick to the original design and if you don’t like it - don’t use it and buy something else until you will find what you really like, don’t try to make a Frankenstein out of some dead cartridges, i do not trust to retippers.