Generally Speaking

Have the best of both worlds, buy the cables used and get 2 runs of cable 'A'. That one was not too hard to figure out, lol. I think it would be speaker dependent, i.e. if speakers x-over networks are there storng point or not. I personally use a shot-gun(external) biwire set up, and found that I have much better bass with this set up.

If I remember correctly the reason I was told bi-wire sounds better is that when the drivers travel in the oppositte direction that they send a little interference back into the other driver. The extra length helps dissipates this interference. I cant swear by this but it was what I was told.

TRUE bi-wiring ( individual cable runs to the high and low frequency drivers ) can contribute the following benefits to the system IF the drivers are actually isolated when you pull the jumpers:

Increased control of the individual drivers due to lower series resistance

Less crosstalk / intermodulation distortion between the woofer and mid / tweeter

Increased bandwidth / more linear response due to optimized cables for each frequency range

There may be other benefits to doing such that are inter-related to the above. You might also be able to achieve a portion of the above by using an all in one "bi-wire" cable IF the cable uses individually insulated conductors. For best results though, you really do need individual cables for each frequency range. Sean
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