Here's my MSpectralDynamics story...
I got hold of MSpectralDynamics by accident. When Melda first added GPU acceleration to the product line, it was incompatible with my ancient video card. I whined to Vojtech about it and he sent me a debug build to help him troubleshoot the problem. The plugin he sent me for testing happened to be MSpectralDynamics. After a few tries, he got the GPU acceleration working flawlessly. I thanked him for his perseverance (he could have just told me to update my card and get lost - many other vendors would have). He in turn thanked me for my contribution with a very kind gesture, basically said "keep the plugin" for your trouble.
Now, prior to this the plugin had been neither on my wishlist nor on my radar. I'd seen it and it looked interesting but I really didn't know what it'd be good for. But in the process of testing it, an amazing thing happened: I had my mind seriously
blown. This thing was frickin' amazing.
After scraping my brains from the desk and my socks from the floor, I dug into the plugin to see what the deal was. I PM'd a few of my compulsive plugin collector friends, asking them if they had it. None of them did. Not even yorolpal. It seemed to be a well-kept secret.
I'll admit that at this point it crossed my mind to keep it a secret. Hey, why not let people think I'm a better mixer than I am, and keep the discovery to myself?
But nah, I'm too much of a blabbermouth. So I've been working on an in-depth tutorial/review for about two months now, intended for publication in September's SoundBytes. It's been a long process because every time I figure out something new it can do, I have to revise the piece. And that's been happening about once a week. It happened again just this morning.
MSpectralDynamics is now in every new project. My current project contains no less than three instances: one on the vocal bus for leveling, one on the instrument bus for ducking against the vocal, and one on the master for general silky goodness, in front of Ozone. The GPU acceleration makes it practical to have multiple instances, as it greatly reduces CPU overhead on my stressed dinosaur of a computer.
So trust me that when I join cclarry in saying "do it", I ain't just whistling Dixie. Be prepared for a little study and experimentation, because it's not like anything you currently have in your toolkit. But once you get the hang of it, oh my.