There’s a huge synergy thread in the rack forum, it’s a very good system. Personally, it’s im not a fan of the ecstasy and shiva, although I do like the uberschall. For 3k I’d either go with the fryette deliverance or a friedman of some sort.
If you’re talking about his rhythm tone on the ozzy stuff, that’s stereo with a detune effect. Tubes, different drives, etc aren’t going to make much difference. His live tone is just jcm800 and his od, great tone but no voodoo.
I think belden made a similar 2 conductor cable. The fulltones were not the usual coax guitar cable. The planet waves stuff sounds good, but I’ve had high failure rate with them. Currently looking for some good, low cap cables myself.