If you already have a motorized roller base then you can use the Jobo 1500 or 2500 series drums to do rotary processing. Works really well for me, I do all formats up to 4x5 and then I do larger sheet film in Cibachrome and Unicolor drums. I figure someday I might spring for a Jobo machine and when I do I'll have all the tanks and reels I need.

I think that a Paterson or other tank would probably leak on a rotary base, I think they're basically designed for inversion processing.