Audioquest or Nordost for speaker cable

It doesn't matter. You won't hear any difference whatsoever. 

It doesn't matter. You won't hear any difference whatsoever.

Ah yet another highly insightful and useful post from troll city.

I had a full Frey 2 Nordost loom years ago with the QX4, QB8, the whole nine yards. This was with Leben electronics and Devore speakers. 

I loved this setup and always thought if one was to get into Nordost the Frey was the sweet spot. Over time I sold off the cables (didn't pay for them it was a work trade) for a speaker or amp upgrade. As with all hobbies things come and go.

My advice is to go slow with your changes. You should be in a pretty good place. As said above the Tyr is excellent and nothing wrong with a mix. Just be sure that dollar for dollar would you get the best value for cables, or perhaps a new amp or dac or speaker? The room gets more important at this phase of the game too.

Nothing you don't already know. I do miss those cables but my room has changed requiring a different speaker, etc so I'm not even sure the cables would make much difference now. My point being they aren't that high on my list as they are on yours. 

You could go either way.  They're both excellent brands.  Suggestions and recommendations from others to get you started has it's place and can be very helpful, to a certain extent.  However, there is just no replacing in-home auditions on your own audio system, in your own room.  Ultimately, that's the only way for you to be 1000% certain you made the right choice.  Happy listening.  

I have not used AudioQuest in years so I can’t give any input on their cables, but use their Edison outlets and am very happy with them. I’m sure the AQ cables are great nonetheless. In my experience with much older generation such as Lapis, Diamond and Sterling, they did not muddy the sound. 
 

I use Frey 2 speaker, XLR IC’s and in my system they sound great. I did bring home a Heimdall 2 XLR  to compare to my Frey 2 and took them back - the Frey 2 to my ears was superior . If you enjoy your current Heimdall, I would be surprised if you didn’t find the Frey 2 an improvement. In the Nordost line that is probably as far as I’d go with your system, as not sure the money for Tyr would make sense.