I've been loving the overdrive half of my Germanium4 Big Muff for punky pick style stuff the past month or so. I keep the gain dimed, the tone full counter-clockwise, then bring the bias up (from fully CCW) until I have enough grit.
It's got a little bit of a weird top end thing happening when I use it with fingerstyle playing (with my bass, amp, amp settings etc..) if my technique gets at all sloppy, so I wasn't sure if I liked it until the lightbulb went on and I started pulling out the pick again.
I can try to get some soundclips together if you want after the weekend...
It's been awhile since I've had an ODB-3 so I can't reliably compare the two...I really liked it for what it was until I went through this thing where I was using EMG's - the classic active ones...ODB-3 sounded terrible with the EMGs...
I'm wondering - when you say you've tried taking out some highs, have you tried a filter/EQ *before* the ODB-3? I remember whenever I had to add some eq to the sound of that pedal, it always worked out better eq'ing what was going in, rather than afterwards in the chain. Just a thought.