i need 20 meter speaker wire, decent quality

Well said Al and those mentioned in his post.

As Al said the if the attributes of balanced XLR connections are up to snuff, then that is the way to go.

Best

Dave

I appreciate all your input very much. I spoke with John at JW Audio at great length and he was very helpful. I ordered two 75 foot bi-wired speaker cables from him. He has great feedback and seems to be a very likeable guy. I will use them for 30 days and if I don't like them I can return them for a small restocking fee, which seems very fair. I will have a professional installer run them up and down walls on the inside. In fact that is what makes the runs so long. If i could run them as the crow flys it would about half the distance.

Thanks agian for all your help. I did speak with MBL and Krell and they both suggested this is a good way to go. We shall see. I am sure it will be much better than the 14 guage braided cheap wpeaker wire I have been using for the past ten years.

You might check with your installer to see if it would be easier for them to run 2 separate runs of the solid core cable through the walls at a time if you were thinking of having the cables bi-wired on the amp end. The solid core wires are fairly stiff, and trying to push or pull all four cables from a bi-wired pair through the wall at the same time may be a bit tricky for them. They will go through easier in most situations one pair at a time. You would then just attach both spade ends (2) to each output binding post of your amps for the two pairs, instead of crimping/soldering the wires into a single spade at the amp end. This "double run" would be the same sonically, but possibly easier to handle around tight bends in the walls if that might be the case.
I just noticed that you showed two different stereo amps. Are you bi-amping the speakers with the two amps, or just using one of the amps and bi-wiring it to the speakers?

Some of you guys have been suggesting ways to raise the speaker cable off the carpet, which I am currently doing with some clear plastic stands I got on this site. My questions is this: will it actually make that much difference when the cables are going to be real close and actually touching the inside of the walls they are running up and down through? Only aobut 6 ffet is going to be exposed. The rest will be within the ealls and attic.

Just curious. Are you running the Krell and Pass amps at the same time, or just deciding which to keep?