Let's clear something up before getting into this list. You don't need every plugin on the market to make top-of-the-line, professional quality music. Over the years I've acquired countless plugins. Some people collect vinyl, some people collect comics... I collect plugins. It may or may not be a borderline addiction, but I haven't found myself sleeping in a back alley, trading food stamps for plugins... yet. The funny thing is that I only use a handful of plugins when producing, mixing and mastering. Every now and then I'll reach for a specific tool to accomplish a specific job, but for the most part I get away with using a limited number of devices.