Turntable isolation platform Recommendations?

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.

@speakermaster- normally, I would agree that a wall shelf is usually a good alternative and cost effective. I'm dealing with a turntable that is about 170 lbs with one arm, add another 30 lbs for 2nd arm pod (not in use right now) and the HRS plinth adds around 50 lbs, I think.
I had a structural engineer here (I thought I mentioned that in this thread, maybe not), but I had the idea that they could mount a steel ledge from the wall in combination with the brick fireplace flue (unused as a fireplace). The house, which is an 1880's Victorian, was completely restored, from foundation to roof, but the engineer said the walls would move in conjunction with the floor and nixed the idea that a wall shelf would work for my heavy table. Not all turntables are this massive, though and the wall shelf approach should be explored as a first option, at least if the problem is potentially footfalls. When I had a brownstone in Brooklyn Heights, using a much lighter table, the wall shelf worked extremely well. 

That kind of mass on a wall shelf can be bad news. Walls flex also actually, worse than floors because they are much thinner. Hang that kind of mass on a lever arm and you get a very springy affair. 
As whart implies, mass is not isolation when it comes to low frequencies.
It is a shame to have to put that beautiful table on an ugly MinusK platform. I would sink the MinusK into a cabinet so only the upper surface was visible. Anyway, this is life with turntables.
@whart , Look at the Schroder LT tonearm. Just a thought if you wanted to get rid of the compressor. If you are ever up in New England I'd be happy to demonstrate Sound Labs for you. But, judging from your room and taste in gear I'm not sure they are the speaker for you. 

Thanks, mijostyn. I learned to listen on stats. I'd love listening to a big pair.  Getting me to come back to the NE is a whole other question, but I used to love autumn  in New England. Gorgeous- the Adirondacks, Maine, Vermont, all of it. Used to drive competitive sports cars non-competitively -- that was one of my other passions for many years-- just a few days on the B roads with obligatory stops for coffee, cigarette breaks (stopped smoking) and the occasional query from the local constabulary. What a beautiful part of the world that can be. 

You obviously have had the experience. We tolerate the crap weather we get the rest of the year just for Autumn, the finest weather with technicolor. I live in Southern NH. My brother has a condo at Saddle Back mountain in Main. I drive a 911 C4S year round. Maine only has enough money to afford State Troupers on the major highways. There are thousands of miles of two lane back roads ( B roads) that are unprotected except for the local constabulary in the small towns. You just have to slow down when the speed limit drops before these towns. Other than that it is....open season:-) Catching air, lurid slides, big fun. Very little traffic. I use to autocross but it was taking up too much time and money. I stopped when the kids came along.