Isolation platform for non suspended turntable?


I am currently using an SME 10 turntable on the top tier shelf of a Sanus System CF-5 component rack. I have heard recommendations for the Townshend seismic sink, Bright Star Audio componenets (e.g. Air mass 3 in conjunction with a BIG ROCK,), and Symposium Ultra isolation platform. I also hear the Sound of Silence products are very good but are a little pricey. Do any of the Audiogon members have any suggestions/recommendations?
chuckaolcom
Bob, I could never float that past the wife. Seriously low WAF. I've got a 1/2 piece of plexiglass sitting on some vibrapods. This set up eliminated a ton of feedback I was getting. My "rack" is a decorative wall unit and is fairly unstable. Without the platform I couldn't even listen to my TT, the feedback was so bad. Now it's fine. Good enough, anyway.
I made a DIY sand box from 3/4 MDF with a seperate plinth for my turntable motor and table. If you have a friend with a shop you can make one for $75 or so. Mine holds about 75 lbs of sand and does and excellent job of eliminating vibration. I also have it on a beefy, DIY, cherry pillar, Birch, European pilewood, two shelve unit that is extremely stable, which looks fantastic. All of this rest on a cement floor with a pad and carpeting over it.
You simply must try one of Geoff's Promethean Base isolation devices under your 'table. This thing works magic under my Spacedeck. It is on the order of a component upgrade. Seriously.

Oz