The best speaker you ever heard?

The best speakers I have ever heard are the ones I have owned since 2005--PSB Platinum M2 monitors. They are so good that I am trying hard to replace them with much more expensive speakers but can't let them go. Very frustrating, but with every system upgrade, they get better and better. Very fast, transparent, sweet when necessary but with a real raucous nature when called upon.

Im a skeptic. I dont think that just because a speaker costs 100k it is the best. As of now the PSB Synchrony One holds my attention.

Revel Salon II second pick.

Not to go off topic but I've compared exotics to the PSB M2s and still prefer them. I agree with the skepticism about price in the previous post. This weekend I'm listening to SF Guarneri Mementos which if I buy will automatically become the best speaker I have ever heard, in my limited experience.

Oeiras99 - What does purchasing have to do with making a speaker the best you've ever heard? Their sound doesn't change simply because you didn't take them home. If they're a significant investment and you're happy with your PSBs, why change?

Mceljo. I will buy the Mementos only if they sound better in my system in a home audition than the PSBs. In that case, the Mementos will be the best I have ever heard; if not, the PSBs are still champs. Thanks for your input.