There's something worth paying attention to, as we talk about "best" as relates to speakers there's a big difference between those costing over $50k, under $10k, and somewhere between.
Yet there are those notable speakers that don't break the bank and we find guys having tens of thousands in components due to the fact that the speakers fully reward the extreme gear.
Look at the level of cable that seems "right" for an $80k set of speakers, we think nothing of that audiophile spending ten or twenty grand on speaker wire and the interconnects are no price bargain either. Yet the same system and wire can be put to any level of speakers and you will never hear them sound better, you will never hear more audiophile qualities out of them.
Big guns audiophile sound can be had with some of the sleeper speakers out there like Magnepans, and there is an array of components that perform way beyond their price point, same for wire.
I used to put a giant killer system together for less than the cost of a set of the monster speakers typically associated with six figure systems. Even my best value wires that cost a fraction of what they outperformed still put the wire at over the cost of the components. Heck, I was using $3500 power cords on $4000 monoblocks. But here's logic for you that's inescapable, if you are going to put a $4000 amp up against a $30k amp and that amp sounds better with a $3500 power cord the $4000 amp has to get the same power cord and wire to be fairly compared. So what if the power cord costs as much as the amp, where does your logic sit on which you'd rather have, the $30k amp and $3500 power cord or the amp and power cord as a combo that soundly out performs the more expensive combo? For some people it's more about how much it cost, for others it's about what it sounds like. Audio gear doesn't lie, and the only way stellar sounding speakers can compete with those costing vastly more is to be on an equal system footing. So we find ourselves working systems up from speakers that have huge performance reserves, and there are a lot of them out there.
The best speakers I ever heard were on the best systems I ever heard.