Hi! My opinion? Well, bi-amping can be great with certain speakers, but makes little difference with others. Same holds true with bi-wiring - perhaps B&W being a rare "must" even by their own recommendation. Don't forget that some wire mfgs. offer a split wire in one sheath which isn't true bi-wire but is close and less expensive. If you do a true bi-wire meaning 2 seperate runs of wire, remember that you should use better wire for the tweeter/midrange and can use less expensive for the bass, but be careful of how you make this match since a mismatch can lead to some weird phase problems. I think that the best solution for most speakers is to get a great amp and pair it to the most expensive speaker wire in a single run that you can afford. This will sound better than bi-wire or bi-amp. Look for a pair of Transparent Ref. wires or Transparent XL or MIT Oracles. I have auditioned a lot of wires and still think these two companies are the best.