Turntable isolation platform Recommendations?

@lewm, Get a spring. Glue one end of the spring to a piece of plywood so that it is standing upright. Now, start adding mass until you get the resonance frequency down to 3 Hz. Hint, you will never get to 3 Hz. The whole affair will fall over long before you get there. Now hang a spring from anything handy. In IV pole would work great. Start adding mass until you get to 3 Hz. It will bounce at 3 Hz and come to a rest in exactly the same spot every time. Hanging a mass from a spring is far more stable than sitting a mass on a spring especially at low frequencies. This is basic spring science Lou. It is why a Sota will tolerate foot falls and an LP 12 will not. 

@whart , I know, setting up a turntable on a MinusK platform can be an adventure. You have to get the center of gravity right and in your situation you have to do it juggling the various pods. The other problem is that you have to be very deliberate when handling anything or you can get the whole affair bobbing. One of the main reasons I like the Sota over the SME and Basis turntables is the suspension is internalized so you can put your hand down on the table without getting it dancing or causing it to skip. Have you looked at the Dohmann Helix? That is my ultimate turntable for the time being. 

I got news from Donna yesterday. My Turntable is finally under construction. (after 9 months)

@whart , the bottom of the Kuzma components are flat metal? No feet or pads? Something to keep them from sliding? I know they are very heavy.
The MinusK is totally passive and the Kuzma is grounded. I see no problem in putting the Kuzma directly on it. But, I don't like unnecessary complexity. I can't think of a reason the additional platform would create any issues either as long as the table is at a reasonable height that you can use it comfortably. I like my table up higher around four feet. 

@Mijostyn- yeah, there’s something on the bottom, but I also was concerned that the metal top of the Minus K would have a sound and liked what the HRS brought to the package, having used it for some years before getting the Minus K. The one downside is that the HRS winds up distributing the weight across its surface, to its contact pads compared to the naked parts of the TT being in direct contact, with their mass less "distributed" (ala the HRS platform). I think that made it harder in some ways to balance with the two arms. I’m not sure what other Minus K owners are doing, but most don’t have the XL so it’s hard to compare notes.
I will say that anybody contemplating a table like this better have a good set up plan in place-- when I had the Kuzma Reference it was set and forget- the internal suspension was quite effective and no need to go to extraordinary lengths. With the XL you have a lot of weight/mass and must isolate it effectively. Maybe less of a problem for folks on a concrete slab, but for situations like mine-- you can’t easily hang it from a wall (I had a structural engineer look at it when he was here for other work) and any placement on a springy floor is going to be "exciting"-- especially with that air bearing arm, which is in some ways less tolerant of things like edge warps (or footfalls). FWIW, Franc Kuzma is one of the best people I've dealt with- responsive, fast turn around, and he likes dealing with customers. I will visit him next time I'm in Slovenia!
I’m not really contemplating a different table, but we will see. Focus next is on speakers, but that’s not going to happen overnight. I need to do some traveling and listening.

I think the Townshend Pods are great bang for the buck and I use them myself.  But I don't pretend for a minute that they perform at the level of SRA platforms....it's not even close but my wallet is happier for the choice I made....it's all about priorities of where we put our money in audio.

The preferred method for isolating a turntable is a quality wall shelf that will stop the vibration and bounce from having the table on a suspended wood floor.