I got the Finalizer when it first came out, and used it on every commercial and album track I did for years. It was on hundreds of TV ads I did. Had some great presets for sound effects that I could never reproduce with other very expensive gear, including legendary compressors and EQs.
I spent months tweaking presets to create some good ones that worked for me and my clients. That's the thing, of course, that's needed to make it sound good. It is very tweakable, and most people don't bother.
Then I made friends with a grammy winning mastering guy, and he convinced me to get rid of it. "Bad stuff," said he. "You're killing my ability to properly master the records you're sending me." I figured he was right, and of course he was.
But now, of course, I miss it. Like any tool, it can be misused, but used right...it's nice. Right use? Stuff like TV ads, demos, etc. you'd never send to a mastering facility.
Then again, I love having the hard choices made for me.
When I get some extra dough, I'm gonna buy another one.