Speaker Cables and Connectors

My suggestion is to match your speaker cable with your amplifier --- and not with the speaker.  Your dealer can help advise on what cables work well with your amplifier (or cal the amplifier company and ask them).

@OP,
There are retailers that allow you to try their products, and return them if they do not perform.
https://www.thecableco.com/lending-library
Once again, it would help to know what you are using in order to ascertain what would be best for your system. I would think The Cable Company would enquire the same info if you were to contact them regarding cable recommendations.
Bob

I find it somewhat amusing when folks suggest that I should get the cables that sound the best to me... I appreciate their assistance and I certainly understand the logic. However, how am I supposed to purchase the cables that sound best to me? I know of no retailer who will let me borrow a set of cables, test them on my system, return them and then try other cables. It is not a realistic option, in my opinion. Thank you for the suggestion, and I do appreciate it, but in today's retail environment, those like options are not feasible.

$350 USD. I can do things, but I would prefer not to.

What is your budget? Are you a DIY sort?

I would follow Focal advice: a cable 4mm or larger depending on length and some good banana plugs from parts express, or kabeldirekt for example.

My recommendation is to forget everything irrelevant like your other components and focus on the one thing that matters, how they sound. Really. I cannot think of anything less relevant than... all the other stuff people will mention. Anything other than how it sounds, forget about it. That's my recommendation.

I have no experience with Focal's, but I think it would help if you described the rest of your system.
A lot depends upon that information as to what will work for you.
B