I can attest that Marigo Mystery feet will certainly sound better, however the cost is somewhat excessive ($1500 for a set of the current F8). A further consideration is tha even with the removal of the stock feet there is not enough clearance at the front of my REF40 or Ref 2 phono for the feet to sit flat so it does take some finessing, the sound is worth it however. Much cleaner and crisper, less smearing of microdynamics
also do experiment with removing the top plate on your amps, in the case of the Ref40 this sounded better
also do experiment with removing the top plate on your amps, in the case of the Ref40 this sounded better