For a Rega Planar 3 with RB300 tonearm...
Tonearm mass 11.5g, cartridge mass 6.6g = total mass 18.1g
Compliance of the SAS = 22cu
Resonant frequency around 8Hz - within the acceptable range but only just
Best results will be achieved using the damping brush which will damp the resonance and shift it towards 10Hz...
So best V15 options would be - any with a brush...
V15IV
V15V
V15VMR
V15VxMR
Ultra500
V15VP (p-mount, fitted with V15VMR Stylus)
V15HRP (p-mount, fitted with V15VxMR stylus - custom loading required)
It is important to get the loading right if you want to achieve the cartridges potential....
The section from an ADC ZLM review circa 1977 (one of the V15's major competitors):
From our listening tests, the ZLM appears to be a little fussy about its loading - as are many other fine cartridges. Feeding a high quality feedback-equalized phono stage with no provision for custom capacitive loading (and an unknown input capacitance), the unit sounds like a first-rate phono cartridge; loaded correctly and isolated from undesirable interaction by a buffer stage, the ZLM is simply superb...........the ZLM may have its minor eccentricities, but when they are satisfied, it certainly can do a lot for the sound of a record.
To put it simply - if you want top performance from a top MM or MI cartridge you have to be able to adjust the capacitive (and prefereably resistive) load.
The main inherent advantage that MC's have, is that they are far far less sensitive to resistive load variations, and almost completely insensitive to capacitive load variations.
Bye for now
David