There can be no "best" speaker, as the way a speaker interacts with the amplifiers it is connected to, the room it is placed in, and the listeners' ears, affect its performance. Top-of-the-line speakers from respected manufacturers can cost between $25,000 and $250,000. At those rates, auditioning is the only way to go.
The speaker grade class A, B....
I do have question on speaker. Like amplifier grade as class A or AB, do speakers have a grade class A or AB? or any idea grade on speaker. Any website tells us or audio review grade speaker from 1st to bottom line in the world. Price of speaker can not tell us performance of speaker. Which model of speaker currently is 1st in the world? German or England or US made.....