I say go with the most solid rack you can with lots of mass. That way if you need to couple some components to the rack you can and if you need to isolate other components you can do that, too (using your goo pads). I decided to build a rack similar to a Walker but with enhancements. I have no scientific data to support my design, but I guarantee that many of the companies making audiophile racks have no scientific data to support their designs, either. I simply designed mine to fit two turntables on the top, have enough space for six other components, be extremely solid and massive, have good aesthetics, adjustable feet, and be relatively easy to build. The only thing I screwed up was the easy to build part!
What kind of floor is under the rack, and do you have any problems with footfalls and your non-suspended table?
What kind of floor is under the rack, and do you have any problems with footfalls and your non-suspended table?