Which is more important, spkr. or intrc. cable?

Mahandave has obviously not thought this through. The detail information between the source and preamp is at a super low level of output strength and is carrying the most infinitely fine detail until it passes through a wire connection. This is the cable that pays the system the most for ultimate detail retrieval. Speaker cables are the wires I can get away with a good neutral cable set. The source to pre gets the best and it helps to match that for the pre to amp set but a midgrade can be used there. I am writing a paper on that for Audiogoners that will be under cable as "cable logic"

You can see from the responses if you know how to weed through for the ones that mean anything a distinct pattern. If you take all posts it seems like they are all over the place. If you look for the guys who are dealers and have experience with huge numbers of products they usually have figured out that it's in the source to preamp connection, it is the most delicate and fragile and has all the information until it gets degraded by the first set of cables to whatever degree you determine by the interconnect used. After the preamp bolsters and amplifies the signal it's at a much higher and stronger amplitude and a good midgrade neutral cable won't have nearly as much loss although it should be matched as well.