No two speakers measure identically so there is no one best. There are many bests with different compromises. Measurements and research into speaker performance tells us that we want neutral speakers. I have not seen anyone in the Pro industry demonstrate with their research, that they want a colored one.What I think a lot of people are missing is that the creative process is not a monolithic one where everyone that records, mixes and masters music or post (sound to picture) benefits equally from having "the best" measuring speakers.
First, welcome to the forum and don't take this personally.I have 25 years as an engineer, starting with recording and mixing music for post and then focusing on the non-music post portion and in my experience there is a lot more to it than just what measures best.
Your everyday job has no grading built into it. You produce a product that is the sum of what you do, what the artist delivers, and what the label forces on you. We can't parse this out in any reliable way to figure out the role that the speaker played as to enable you to know which speaker does the job best for you.
I have been trying to upgrade my everyday tools. I watch videos of people doing exactly what I need doing with the same tool. An electrician takes 5 different wire strippers and shows how each one works on wires. That, is useful. Telling us that he has wired houses for 25 years, is not.
What is good news is that your industry has massively shifted toward the same goals we have in sound reproduction. Dominant players in your field are producing neutral speakers with good directivity. We are here with so much excitement because the Palmer may also be doing so, but at a very attractive price. This is proof that measurements have started to play a strong role in decision making. As is the fact that we have so many Pros here.
Here is the key thing: if you are not able to do the best work you possibly can with these properly designed speakers, then I say the arrow points back at you, not the speaker! It in a way invalidates your argument that it is you that is important, not the speaker.
Finally, let me repeat again: we need a standard. Video has one. Same standard is used for color and grayscale in production. When we use the same to design and calibrate our display, the colors and picture overall that we get, has a very high chance of being the same as your counterpart in production. It is time that we moved in this direction by adopting the same standard in speakers (CEA/CTA-2034).