Some people become addicted to plug-ins; others become connoisseurs. That is, they're borderline addicts but too refined to splurge on just anything. They need a certain something, which is what the following plug-ins — all available in AU/VST formats for Mac or Windows—have. These instruments and processors do things a little bit differently, and despite their awesome results, they're not yet household names in the music world. So you can proudly use them while looking down your nose at the uninformed.