Okay, the stock earbuds don't fit, so I need to buy something new. I have read many threads about the best alternatives, but want some advice on what YOU did to find replacements. The Apple Store won't let you try before you buy - I would love to check fit and sound quality. Or do you go off of recommendations and buy online and hope for the best? A list of alternatives is good, but I'm most interested in hearing how you went about buying replacements.