What type of turntable should I use?

if your turntable was designed with a suspension, you should keep it working that way. the suspension is designed to absorb the sinusoidal waves emanating from your speakers. the spurious vibrations created by trucks, footsteps or a dropped object are not sinusoidal waveforms. they would look more like a square wave (spurious vibrations) and can cause feedback through your speakers. so i believe it was sota's design objective to suppress the sound waves coming out of your speakers. i hope this answers your question. if it were my turntable, i would never defeat the suspension of the sota.

Dogcanskate,
I don't think Nrchy was contemplating defeating the suspension on his Sota. I agree with you that this would be a brave and, if irreversible, potentially foolish thing to do.

I think he was/is contemplating changing to a non-suspended design. As a Teres owner I'm happy with that, even on a sprung floor, but I haven't heard similarly high end suspended tables so I can't offer meaningful comparisons.

Theoretical advantages of a non-suspended design? Well, the less the table can move laterally in reaction to stylus motions, the more dynamic the signal will be. Of course a really well executed suspension might offer isolation from acoustic energy that you described, which should lead to a lower noise floor and cleaner groove tracing. In either case, quality of design, materials and execution probably matters at least as much as the theoretical differences.

doug, i totally agree with your post.my tt happens to be an lp-12. i could easily live with a tt that has no suspension if it's tuneful to my ears at least. both camps have wonderful offerings.