I hate to disagree @linnvolk, but I have an engineering degree, took physics (even thought it was in Computer Science and Engineering) and knew about Coulomb's law (I vaguely remember it) and of course friction, but not "Coulomb Friction".
In any case, as in one of the earlier posts as recommended by one of the poster's dealers, let your ears do the deciding. Rega uses spikes (very big ones) on its $40K Naiad table and SME tables are very highly regarded and use some type of podium/springs.
I use springs under a platform under my turntable, and spikes (with discs so I don't tear up the hard wood floor) on my speakers....really by default since they came with the speakers and are recommended by the manufacturer. I would be interested in hearing if a spring platform would improve the speaker sound, but then you have to decide if you take out the legs and the spikes and the discs, just the discs, just the spikes and discs....a lot of experimentation. I am sure the distance off the floor makes a difference also.
The fact that the spring platform for speakers from Townshend costs more than my speakers makes it a non-starter. I personally think springs are better suited to turntables than really heavy items because of the sensitivity of the cartridge picking up the signal from the groove. A completely solid floor standing speaker that is well designed should not need springs. There must be a reason why NO speaker company designs them with springs. Now when you talk about monitors on stands, you're adding a lot of variables, and maybe then springs would be advantageous.
Sorry - no word salad, just horse sense.