Here's a bump.
Yeah, I have a couple of diffusers and bass absorption foam. Makes a huge difference, and is way worth more than any new EQ plug-in or whatever. Makes everything sound... tighter, you can hear what you're doing better, and the overall room will sound and feel better. Hearing what you're doing accurately is the most important aspect of mixing imo.
Don't visit GAF much anymore, but whatever you guys do, I'm in, but I can't do any vocals. If anyone is down for trading email addresses or something where we can discuss these things as a group outside of GAF, that would be cool.