High mass turntable owners -- What Stand?


I'm in need of a stand to support my 100 lb. + Galibier Quattro Turntable. I would like it to have three shelves in addition to the top for the tt.

The stand will sit on a concrete floor. Other than the turntable, my other three pieces of equipment have a combined weight of approximately 30-40 lbs. Thus, the stand will be very top heavy and prone to "wobble".

With the 4" thick maple platform I use for my Galibier, I'm looking at approximately 160 lbs.

I'm not too interested in a DIY design. I have considered a Flexi Rack, I not sure it's massive enough, or laterally stable enough for my purposes.

I have been considering putting my 4" maple platform in a sandbox, so I would probably be looking at a combined weight of at least 300 pounds.

Turntable owners such as: Galibier, Teres, Verdier, Redpoint, Simon Yorke, Schu, etc. what methods of turntable support are you successfully using, and what would you recommend for my needs?
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Depending on your tolerance for expense, one recommendation is the Walker Audio Prologue Rack http://www.walkeraudio.com/images/Rackforweb.jpg Designed to support the weight of the 300+ lb Walker Proscenium Gold turntable, while offering three additional shelves.