What your choice speakers with spikes or speakers with a vibration isolation device?

I am in the camp of vibration isolation. I think it makes sense that the less energy transfer into the floor goes into the air. I found these really cool magnetic isolation feet that I’ve never seen before. 

So these really cool magnetic isolation feet that you've never seen before, I imagine they float the speakers above the floor in gloriously perfect isolation. Wonderful. 

So then when the speaker cone moves one way, the speaker cabinet moves the other way. Because, Newton. That force has to push against something after all, even if its just the air, and if its gonna move the air one way the air is gonna push back and the speaker is gonna move the other way. 

Which the speaker is now free to do, floating on magnets and all. Free to move. 

Correct me if I'm wrong, but it seems we want the air to move, and not the speaker? 

Love the Townshend Seismic Podiums.  Replaced previously used spikes on my Spendor D9s and improved the sound in my system. Not inexpensive but to me they were worth the investment.  

Miller carbon,

I really fell in love with the Townshend seismic podiums that the reader after me commented on. Those are the ones I really wanted but they’re very very expensive like 3K on speaker. So I had a machinist friend of mine make me a set that work with springs like the Townshend model. They work great the biggest difference I noticed was it seem to have cleaned up the base at large volumes. I understand what you’re saying about the speaker going one way and the box go on the other. For some reason it works just fine. I have a set of Tekton 4-10 subs that way 95 pounds each. I’ve got them standing vertically and at large volumes you don’t see the speaker move at all it just pops out music.
I don’t think it’s gonna be any different when I switch them over to this magnetic foot. I am fascinated that it floats there with just a steel pen to keep the magnets in line. Do you have the thing that was cool was they were only $140 per speaker. They have smaller ones for individual components, do you see a problem with floating a CD player in the air?