Turntable isolation platform Recommendations?

One thing hardly mentioned here is the construction of the dwelling where your system exists. My system is located on the second floor of a 120 year old house in upstate NY with mostly a sandy terrain. Hardly on a bedrock foundation.
Every situation is different due to many factors. My TT is very old with almost no sound dampening in the feet. Is roughly 25 pounds. Millercarbon responded to my previous post and had a very good suggestion.....springs. For my situation, I decided to try them. Certainly Townshend would be the best option but I went with Nobsound springs since they are much cheaper in price than Townshend just to see if the springs added any benefit. They did. The Nobsound seem a bit crude since they house a number of springs but possible to remove springs to accommodate the weight of the table.
Other recommendations mentioned here are certainly worth checking out. Just wanted to offer my experience.

Marble pastry balance and Sorbothane feet 

Pastry slab ^^^

I have my Gold Note Mediterraneo table spikes(3)sitting on 3 SSC Netpoint 300’s, which sit on a 2" thick wooden butchers block, which is seated on 5 Nobsound springs on a Salamander A6 walnut stand for they’re base. My form of "table isolation" cost me all of $250 to do, plus the little L shaped level sitting on the butcher block.

All you need is butcher block acoustics walnut or Maple slab. Place it on top of several vibrapods spaced symmetrically. Very economical solution. Better yet, place the slab on top of both vibrapods and their companion cones....still a helluva lot cheaper than HRS or the like. I think they call it the vibrapod sandwich. Ultimately, I would place the turntable on a made for turntable wall shelf mounted preferably to a dry wall dressed concrete wall. Then use the above vibrapods and butcher block acoustics slab.