Thanks. Homebrew makes fantastic pedals. The Psilocybe phaser sounds excellent on bass and yes, it is capable of the funky "wah woh eee" sound. It has 2 toggle switches, one is kind of like a low end cut and the other changes the sweep of the phase. This phaser is mild compared to others, it helps to have a little overdrive before it if you want a more pronounced phase sound. Since I didn't want a crazy phase effect, this fits me perfectly. It sounds AWESOME for slapping and adding texture to clean tones.
The Hematoma overdrive has an overall "dark" sound to it but still pretty versatile. Perfect for playing black sabbath-esque tones to give you an idea. I'm constantly A/Bing it with my fulltone. The fulltone is capable of doing VERY subtle overdrive while the hematoma, even on the lowest gain, is not as subtle. I'm not sure if I can recommend one over the other just yet, I'm still experimenting.
The Big D is without a doubt one of the most versatile overdrive, distortions I've tried and I have it on my board for this very reason. I have it set to a slight overdrive when I turn it on, and a screaming distortion with the boost switch. On certain diode settings it is capable of fuzz, but not the type that a dedicated fuzz pedal will give you. It retains the low end just as good as the hematoma. wonderful pedal.
Hope this helps.