I just bought two more sets of Pros from Audionut (no affiliation, just a customer). Results can vary when used with other tweaks, but they do tighten up things. Usually, I use the Pros with the 5/8" balls.
I tend to use Maple butcher block, spikes, BDR #4 cones or the 5/8" balls with the Pros. Sometimes I make an "Aurios sandwich" with butcher block in the middle. It does make my system seem more like other stereo systems that are more expensive and better laid out than mine. I like that.
I have the Pros or the 1.2's under everything, even the subs.
I tend to use Maple butcher block, spikes, BDR #4 cones or the 5/8" balls with the Pros. Sometimes I make an "Aurios sandwich" with butcher block in the middle. It does make my system seem more like other stereo systems that are more expensive and better laid out than mine. I like that.
I have the Pros or the 1.2's under everything, even the subs.