Richard,

Took a while to finally suss what/how produced the most consistantly good results, in varing different enviorments.

The only 'Style of Iso -Tranny' I would personaly use now is Either BPT (120v only) or Equitech, both of these companies use a patented 'Balanced power' technologly commerically since 96' pretty '***insert RG stryle comment here**** too.

Think along the lines of Hydra, this style of mains scrubbing has given us the most consistant results we tried so far.

If you wish to see what make/model we're running then check out my kit. cheers T.