Best speaker cable in the $2,500 range

You should consider speaker, speaker cable, and power amp together as one unit. Some speaker and amp combinations are more sensitive to cable changes than the others. I have experienced some very cheap cables out-performed some very expensive ones in my system. I would advise against setting a price point and only consider the ones at that price. I would try cables in all price ranges up to your budget including the very cheap ones like the Home Depot extension cord that I am using to connect BAT VK-75SE to Vandy 5. You might be surprised to find that the best matched are not necessary the most costly.

There may not be a best cable in the $2500 range. It's possible that you'll go far beyond the line of diminishing returns. Sbank's question about the rest of your system is very important. Besides asking self-appointed audio experts on an internet site to help you spend $2500 on cables is questionable. Call The Cable Company and ask to borrow various cables from their lending library and listen for yourself. You may find cables that sound great for a quarter of your budget. Spend wisely and buy more music.

I'd also look into the Ridge Street cables.

i have complete nite setup,speaker cables are biwired.vandy 2ce .cary 306/200,ar 16l pre,and 2 evo200.2.these cables sing and rick schultz is very honest and knowledgeable.you will not go wrong
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I tried out two of the cables on your list from The Cable Company's lending service (and 6 more besides). Ended up prefering an Acoustic Zen Hologram II to anything I had heard (as a bonus it was under $1000).
What I liked on my system is meaningless, but what might be of use is for me to reccomend that you get hooked up with a local dealer who will let you do in home try outs or else give the cable company a shot. Else, you can find a used cable cheaper but it is a shot in the dark and a good buy on a 2500 list cable might still cost more than finding out that a 500 list cable is what works in your system best.