Nottingham resonance control

My goodness, The Wave Mechanic is double the price of what it is if you get it from the UK. This is quite bold.
For this kind of money, a bit more, I would get Walker.

Fourwnds, how easy was it to remove the feet? Were they glued?

Inna, you are absolutely right. The cones do reflect some of the energy back into the Panzerholz, where it can be dissipated as heat, and not transmitted, however indirectly, into the platter bearing. That is why I suggest a shelf of Panzerholz, or slate, or even ordinary plywood.

You bring up an excellent point. I suspect that the reason some of the exotic turntables sound great in one installation and lousy in another is just this - the refusal to engineer some important aspect of turntable design. But, as we are discussing, the refusal to engineer a problem doesn't make it go away, and we are stuck with trying to get the best sound from a partially engineered system.

At least with NA the main thing remaining to engineer is the shelf, and that is easy, and cheap.

Inna, the feet were easily pryed away with a little flat head, it appears to be just a basic adhesive on there. The feet are still plenty sticky if I want to put em back.

There is a reason why Nottingham has a cult following, both here and in Europe. Especially Spacedeck because it is not very expensive by audiophile standards.
I am not really familiar with exotic turntables. You are probably right about why they may sound so good and so bad.
Neuance shelf? I'll check it out too, thank you. I have Boston Audio Mat-1.
I am not really in a hurry, I like tuning and fine tuning the system. These things take time and patience.