Crunch Box is a no-brainer. Everybody needs one!
I am now using it with gain around 9 o'clock to send the Bogner over the top.
Although people told me the Crunch Box would be for clean amps only, I gotta tell ya it kicks ass to boost a driven channel into metal mayhem.
One more thing: I discovered how much better the Wah sits between the drive pedal and the pushed amp, rather than in front of the overdrive. I have set the gain on the Shiva already quite high, so the Crunch Box maybe just adds another 10% additional drive as well as shift the mids up a notch, but the Wah after the Crunch Box instead of before sounds twice as vocal, rich and screaming. I think I have a winning set up after a long journey of searching the ideal gear combination ...