Should I buy the Harmonix footers for $2000.00?

It will likely change the sound of your speakers--every Harmonix product I have tried will do that. Whether it's for the better or not is up to your ears, so I would insist on a home trial. Considering YG Acoustics' claims to be the best and most accurate speakers on Earth, I think they would disagree with your using these footers, and it does seem a little unusual that you would want to change the sound of the world's most accurate speakers. But hey, what do I know?

Wendell, I think you misread the post, he's looking for others who took the plunge, he hasn't yet.

Underdog, I bought a number of Harmonix footers in the past (less expensive ones, though), but only after I tried them and heard them in my system. I even used four of them under my Duntech Princess speakers for a long time, principally because I was not going to wreck my floors using spikes (this also wound up breaking the footers as well after a few years). Ultimately I stopped using them in all applications--while they clearly changed the sound, it was not necessarily for the better, and different types of isolation devices worked better in the applications where I had used the Combac feet. I do not think, from my experience, that their high price is justified by their performance, but that's just my opinion.