Peterayer, I have had my 2200 on two surfaces, first, a maple butcher block on top of a target stand and now on top of an Arcici stand with air bladder technology. I cannot say I noticed a difference with the TT however, my electronics are better isolated on the floating shelves underneath and I have noticed a slight improvement.
When the 2200 was on the butcher block you could bang on the BBwith no audible or physical effect. So IMO, the resonate annihilators used for suspension on the 2200 is all I need for isolation.
BTW, you must have heard that system at Goodwins, heard it a few weeks also, quite nice!