Best Speaker wire with Rogue Audio amp and preamp for $2K or less?

"What sound characteristics are you looking for?"

That is a really good question.  It is THE question.  I want a warm midrange.  I don't want a bright treble.  The Rogue Audio equipment is revealing but not overly warm, especially for tubes.  I have read that Analysis Plus may be too bright in the treble for my tastes, although the copper may be better than the silver in that regard.  

Consider Nordost.  Even their lower price series are a very good match with the Rogue equipment.  

A suggestion to try the cable lending library via The Cable Co to try out some different cables in your system. I have an ancient pair of Nordost Flatline speaker cables from the mid 90's. They sound really transparent and fast in my system, but they might let more brightness through than might be ideal for your preferences. Especially with digital sources, I've had to carefully choose my source components to reduce harshness. I didn't have that issue with my turntable though.

I want a warm midrange. I don't want a bright treble.

Nice speakers.  Well, for certain you do NOT want to go with Nordost as they are great but in this case are the exact opposite of what you’re looking for.  I’d recommend Morrow cables that sell direct and you can try at home with a risk-free demo.  However, if you’re open to used there a pair of internally bi-wired Acoustic Zen Hologram ll for sale on US AudioMart for $899 that I think would sound fantastic with your speakers and electronics and give you just what you’re looking for while saving you $$$.  New AZ Satori would also be a great choice and well within your budget.  Hope this helps, and best of luck. 

Buy some Kimber 8TC and spend the rest on software