Modding pedals is like smoking, once you start, hard to stop. :D

Not sure what rubber things your talking about. Never seen the Boss HM before either.

If you're going for that boogie sound, you may like the Metal Zone.

The Metal Zone that I play the most has the Robert Keely mod. I guess I can't say i'm not sure if I like it or not... I just haven't spent enough time tweeking it. It can get a bit thin sounding. I've been playing with it more lately trying to dial it in. I turned some of the high frequencies down on my EQ pedal. I'm finding that between those two I can get some british honk. Mashallish if you will.

I'm not sure who played on Speak of the Devil. I've only know of three guitarists for Ozzy. Randy, Jake, and Zakk....

You had me thinking so I had to go look it up to be sure. uphttp://en.wikipedia.org/wiki/Ozzy_Osbourne#Band_members