what speaker cables would you use?

Pure Note offers a trial (without actually charging on your credit card). I highly recommend you give a listen to the Pure Note Epsilon Reference cables and interconnects.

One of Berning's retailers, Frank Stuppel of FS Audioweb, has a Berning and Merlins in his personal system. Frank (owner) had the following to say about Maple Audio cables

"I have auditioned many fine interconnects and speaker cables in my personal listening system. I have not heard any cable that sounds better than the Maple Audio Works cables. The clarity, dynamics, and smoothness is everything that I would expect from a world class cable. At the price "an audio bargain".

Caveat is Frank now sells Maple Audio cables. If you would like more info on these cables feel free to e-mail me - I have Maple Audio cables and love them!

Alphacore Goertz have a high performance-to-price
ratio. I previously used Kimber 8TC and I find the
Goertz MI2 superior.

I would also recommend that you examine the Empirical Audio web page (empiricalaudio.com) to see if that cable might work for you, as it did for me

XLO Unlimited, the XLO is really special in my system, Atma-Sphere OTLs/Köchel horns.

I have not heard the Jaden from Ric Cummins, www.roomlens.com, but those that have say it's good.

Another option to research is the ZERO autoformer, www.zeroimpedance.com. This might very well be the best choice as it can provide the optimum impedance match for your speaker/amplifier, resulting in superb performance, and I MEAN superb.