First I'm gonna don my Nomex underwear. Now that that's done, I'm going to solidly disagree with both Chuck and VideoJoe. Wire does make a difference. There is more to coherently reproducing sound than can be predicted by measuring capacitance, resistance, impedance etc.. I'm not an engineer, but I've been dealing with this stuff for over 20 years on a day to day basis and there most certainly are differences. If you want to prove it to yourself, go buy several different sets from a dealer with a liberal return policy and listen for yourself. You might find some of the differences to be subtle, or not worth the money, to you. But I'd bet, you will hear that there are differences. VideJoe even said that cheap Rat shack wire sounds bad, so he does believe that there are differences, but like many studio guys, has bought into the idea that as long as you're not using junk, everything will be fine. Just buy a roll of Canare or Mogami and be done with it. If it makes no difference, why even spend the money to even go that far? As far as the comment about none of the studios using better cables, that's just not true. While it is true that there's plenty of low budget studios around that are just cheap (and sleazy, hey, it is the record industry). There are also some who listen and care about the sound of their final product. Call the psople at LucasArts. They heartily endorse and use MIT cables. I've been in some of the studios at Capitol in Hollywood where they were using better stuff as well.
To try to compare wiring a church to setting up a good home hifi is a completely unrealistic comparison. The goals are completely different. In large venue sound reinforcement, no attention is paid at all to the soundstage presentation, harmonic structure or flat frequency response. Most sound rigs for that kind of application don't reproduce much over 12K because a tweeter that will deliver every last detail isn't sturdy enough to live ling in an environment where a microphone occasionally gets dropped and the sound system has to overcome the ambient noise of hundreds of people and fill a 100,000 cubic feet of airspace. Pro sound and home hifi are two different worlds. It's like comparing sports cars to big rigs. They both have wheels and motors, but that's about where the similarities end.
While I mentioned above that I'm not an engineer, I have had several customers over the years who were, and in fact true rocket scientists. When I still worked in retail, I have loaned out cables for in home (away from salesman) auditions hundreds of times. I had a few of the rocket scientists (guys working on satelite communications)take cables into their labs to measure them after listening to the differences. Then after running them on HP waveform analyzers and the like, end up buying $300.00 per meter interconnects, even after admitting that they couldn't measure any differences, but that they could hear a difference.
Like any hobby, when you get into the extreme reaches of the high end, the prices are astronomical, and the differences sometimes subtle, but it's all about what floats your particular boat. My best recommendation is find a dealer who will allow in home comparisons and judge for yourself.
John