I have always found that the more rigid the support, the tighter, more incisive and clearer the sound. Damping of the support by using wood or "absorbers" softens the sound. Marble and glass sounds etched while oak sounds warm etc. I'm old school and have to be convinced otherwise but spikes, cones and inertia allow the table to be as fixed as possible. There is also a school of thought where springs in cups provide both isolation and rigidity at the frequencies that matter so look into that philosophy also.
Would an Isolation TT platform further improve my TT?
My new Luxman PD-171 A TT weighs around 55 lbs. and it sits on a heavy audio stand. The floor is carpeted w/a cement base. Prior to this TT I had a Linn w/was much more sensitive and didn't need an additional stand. I wonder if adding an isolation platform would be beneficial to my current TT. I was looking at Butcher Block Acoustics and MDF W/Lead Core and Sorbothane Feet.