In an article on today’s Wall Street Journal (paid subscription required), Marcus Lillkvist writes that some users don’t think very much of the included “ear bud” headphones in Apple’s iPod and iPod minis. “It’s not clear how many iPod owners discard their ear buds,” notes Lillkvist. “We chose the 80-20 rule, as we think that the supplied headphones satisfy the big majority of our customers,” says Stan Ng, director of iPod product marketing at Apple Computer in the story. The fact is, however, that a wide variety of replacement headphones are available, ranging in from about US$20 at the low-end, to over $500 for serious audiophiles. The article lists just a few of the many options available.