I've been using SoundID with Goodhertz Can Opener for about 4 or so months with Sennheiser HD600's. This combo and some other factors I think got me to improved mixes. I think I'm probably still a ways from highly accurate stuff in the low end like kick and bass guitar etc...and still a long way from not only mixes but performances that really work. But it's better than I'd been doing before. I like the Goodhertz stuff. I find their GUI's really simple and reassuring. But yeah, a lot of people find them terrible. Anyway, I'm really considering the Slate VSX system and don't mind that I won't be using my HD600's to mix as such. They can still serve as mix checking and what not.