Support table or shelf for turntable


I was hoping to replace my oak table with either a wall mounted shelf of a heavy steel table.
The reason is that I am finding that the oak is picking up and transmitting vibrations to the turntable, a Garrard 401 in a birch ply plinth. I am hoping to move to a slate plinth and wanted to maximize the support strength and reduce feedback.
Here is a link to the shelf and here is a link to the table. Both examples of what I'm looking at.
Shelf would be mounted to concrete wall. Table would stand on concrete floor.
Thanks.
noromance
On another related note, I know it's not the best to have the turntable between the speakers. If I moved it to the listening chair, wouldn't it still pick up sound? Or is it to help imaging by having nothing in between the speakers?
It's the second part mostly.. an open area between the speakers is supposed to increase depth and imaging. Though I'd imagine the sound waves would be stronger between the speakers than nearer the listening position as well. I, of course, break that rule with a console and a TV between my speakers. But that's how it goes sometimes. 
Thanks Todd. I guess a smaller wall shelf as I mentioned will be an improvement over the huge table.
Probably. Glad to be of help.

Definitely post back with your impressions once you’ve sorted it. I love hearing how it all works out.
When I bought my trusty (vintage) Linn Basik/Akito some years ago I had put it on top of what I assumed was a reasonably stable gear rack…oops…bounced around like crazy (maybe my rack isn't so stable). I looked up the manual online and noted that Linn recommends a light weight low stable platform and I had one of those…little table, level, light, sturdy. Problem solved, and although the Basik utilizes only 3 large hollow rubber cones under it for damping, they are a brilliant design and the table sounds fabulous even though one of my subs is a few feet away from it. No feedback loop, no nuthin'.