I disagree Jim. I've listened to enough Western Electric as speaker and interconnects and Duelund as Speaker cables. They're a decent cable for the money. But the sleeper cables I refer to by well-known companies that do cost more money, in the end walk all over the Western Electric and Duelund. They're are a lot better.
There is a level of system dependency. My take is it the duelund and Western Electric tin coated wire is a good entry-level wire that's going to suit a guy with a thousand to $5,000 stereo just fine. But a guy with a $30,000 system is going to hear a difference when he puts in a cable that really shines from a quality manufacturer that is of a reasonable price. In my opinion the gray area is between those sleeper cables and the $5,000 to $10,000 to $15,000 cables.
By the way, who uses tin for interconnects, speaker, or power cables from any reputable company. I don't think any do. I believe the whole purpose of tin is to reduce oxidization on cloth coated conductor. But my understanding is tin has a sound. I also believe most people say our objective in creating good audio is to eliminate all sounds and just pass a clean signal.