Cable upgrade

@tonydec .. I’m just going through "itchitis," these speakers sound good, can I make them better? : )

Yes, as already suggested, give your speakers, drivers, woofer surround, crossovers inside - 200hrs a real chance to settle in. Everything is stiff right now. Similar to @ghdprentice spent thousands of hours with different cables. imo, it's still premature right now to be swapping a bunch of different cables in/out, to later find out sound changes again. While your amp/tubes are known to have a softer sound, this can be quite nice too, so give yourself time to settle in with the sound too. 200hrs plus some speaker toe-in for now, maybe. In time, you might even find yourself toeing speakers back out once settled in. Then, If still not satisfied, get loaner interconnect & speaker cables from a dealer to try for a week or two, at least. Initial break-in and settling can be agitating, yes, give yourself time. Best of luck. 

I was contemplating a cable change as I recently purchased new speakers

This is human behavior, not audiophile behavior. When you buy a new suit you want a new tie or shoes to go with it. I recommend keeping your current speaker cables and if you want to tinker with your speakers look at vibration control platforms instead. Isoacoustics, Mapleshade, Herbies, all sell devices to place under any type of speaker.

Op ghdprentice is correct , familiarize the sound of your system and let it settle.Nordost Frey cable are excellent cable.I have a feeling they will work with your set up.Yes TCC can borrow you cable for audiotion but with fee?

With tube gear, I found Nordost cables to be a good match when I listened to them on my dealer’s setups, as well as Cardas gear. And this is coming from someone who really hated the Nordost loom on trial at home on SS gear.
However, these two really work well when used as a full loom, especially Nordost (for Cardas I feel you don’t necessarily need the power cords to march and have good results). And given that they are polar opposites, a home trial is highly recommended.

But in the meanwhile enjoy the Focal Sopras, great speakers!

Once your confident your speakers have settled in I’d encourage you to reach out again and share what improvements you’d be looking for over your current cables so you get targeted recommendations specifically what you’re looking for rather than what everybody else likes.  That’s key IMHO.  Also, I’d encourage you to not neglect interconnects.  In many systems, including mine, they have an even greater impact on sound than speaker cables.  It all needs to work together as a system in the end.  Enjoy your excellent new speakers!