Dear @peterayer : You don’t specified under wich analog rig scenario you made your tonearm comparisons.
Ideally comparisons must be doing using same TT/cartridge/phono stage, well same audio system.
It’s normal that 3 different tonearms with the same cartridge performs in the reproduced sounds in a different way with different kind of developed distortions/COLOR and is up to each one of us priorities in MUSIC at home but here maybe there are other cartridge surrounded room/systems differences in between.
Stand alone the 3012R is the one with more differences between the other two: it’s not a VTF balance design, it use steel build material instead magnesium, bearing is different two using knife/ball and not well damped as the other two. For me the 3012 is the one that develops the higher distortions and nothing wrong with that if it’s what you like but with out any kind of preference bias the 3012 R is the worst one and today not true competitive if what we want is stay truer to the recordings.
R.