You could always order two sets and demo them - I think Crutchfield carries them (Amazon as well). I know Harry W (VPI) use them in their listening house and highly recommend the Gaia's.

With isolation products, one may or may not hear any changes - for better or worse. For example, I was getting alot of feedback in my speakers when turning up volume whilst listening to vinyl. Tried lots of things - moving TT, moving speakers, etc.. nothing helped. Put a Symposium Segue Iso platform under the TT and feedback completely gone. On the other hand, put a regular Segue under my Atlas Magnum and don't hear any difference.