Decent 25' Cable

+1 Tvad. To avoid crazy land for cables that long, https://www.bluejeanscable.com/store/speaker/index.htm

https://www.transparentcable.com/collections/custom-diy-speaker-cables

Look at the 10-2 option.

Blue Jeans Canare 4S11. Order them up directly from Blue Jeans with the terminations you want to use, and the the connectors will be sonically welded to the cable. Love mine.

Yes Canare 4s11 use what the studio's use. Save your $ for other audio purchases.

I'm breaking in some speakers (in a temporary setup). Using some "flat" speaker wire bought at Radio shack (now defunct). Damn if they don't sound dandy! Think I paid $30 for a 50ft coil about 15 years ago.

Blue Jeans seems to be the budget minded choice. I've used their rca's in the past,and they are definitely a well made cable. 

+3 for Canare 4S11. Neutral, presents music accurately, and built for long runs.

Blue Jean's uses Belden cable, nothing wrong with it. They also sell Canare and you choose the type of termination.

Kimber 12tc is not bright.

I do not have experience with the Canare 4S11, but if you shop Blue Jean Cable, I would avoid the Beldon speaker cable.  I've tested with this and it's pretty much lo-fidelity crap.  Probably because Beldon uses crappy copper.  I don't know if the Canare is any better.

However, if you do go for the Canare, try to find the 4S11G version (G indicates OFC copper, which is a lot better).  There are places to buy this in the internet.

Otherwise, if you want a really good cable, you can get Audioquest Rocket 44 "no frills" or Type 8 "no frills" from Audio Advisor for an excellent price.  They can make any length on these cables because they run it off a spool and terminate with a basic banana/spade.  If you don't find an option for your length, just call them and they can do the special order.

@auxinput 
  I agree. The 4S11G should be the absolute minimum someone should consider. About $190 with 2-4 bananas at 25’ if you find the right seller. Pants and nylon mesh covers (multiple color choices) add a little cost but add their weight in gold when it comes to the visual acceptance factor.