The Cake bundle is a good deal - as others have mentioned the CA2a (or whatever the designation is) is killer. I don't use the limiter much but it works. The SSL stuff (other than the bus module included w/ PC) is good. But I find myself using the Cake opto and Softube's 1176 most of the time. Even if I am fooling around there is a limit to how much compressor experimentation I do. those 2 cover just about everything (along w/ the ssl bus comp, which is seriously good). But I almost always touch acoustic stuff w/ compression coming in to firm it up more than shaving overs, so your use may differ.
Get something you can like and learn, then stick w/ it. I'd prefer to spend money on hardware rather than yet another soft tool.
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