Is there a perfect speaker?

Yes. The Magico Q7. Now you know. Slight issue with it: it costs almost a quarter of a million dollars.

My tongue was firmly in my cheek when I said the Magico was perfect. Sorry if anyone thought I was serious. The problem with threads like this where posters are seeking the 'best' or the 'perfect' component (as many posters have intelligently observed) is that there is no such animal. It all depends upon the listener's subjective taste and there is as much variety in that as there are audio components to judge. Rather than ask what the 'best' or 'perfect' speaker may be, the better question is "what speakers do you like and why?" From the myriad of answers that you will get you should be able to discern if there is a speaker that matches your taste. As a practical example, I have a Prima Luna Prologue One integrated amp. A while back I asked in a thread on another site what speakers people have found that match well with this amp. A large number of posters suggested the Reference 3A mm de Capo speakers. I purchase a pair and have to say that for this amp in my listening room for the music I listen to the de Capos are as perfect as it gets. My two cents.