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I do everything in my Jobo (B&W, C41, E6, B&W prints, RA4 prints). Sure there are differences due to continuous agitation but they're pretty minor and I doubt there are many people who could tell the difference between an inversion developed and rotary developed negative even side by side. It's only in extreme cases (multi-hour stand processing) where it becomes important.
In my case of course, cost is a big driver. It costs me about $1/roll for C41 and $4/roll for E6 in chemistry to run my Jobo vs $10 to $15 at the lab. My Jobo pays for its whole purchase price ($600) every year on that basis of comparison. And when I develop B&W, I use less than half as much Xtol (100mL vs 250mL to cover a 120 roll at 1+1) and I can develop 6 rolls at a time instead of maybe 2 - the time savings are immense. And arguably, time is your biggest cost; $5 for a roll of film is irrelevant if you have to spend a whole hour processing it!
Stone: since you have a rotary base already, I suggest you get a cheap 2553 and 3 of 2502 spirals and use them on your roller. It won't leak, and you can do 6 at once! If you end up buying a Jobo for the temp control, you'll have an extra tank to use with it.
I've been interested in roll processing also. I can't afford a Jobo now, so I'm looking at one of those other rollers.
What else am I looking for to complete the kit?
Are there specific types of tanks better for rolling?
Ideally you want a tank that doesn't have tapered sides and maintains a uniform diameter along its length, so that it will not be crooked when laid on its side. Any set of rollers will do, really, though a system that does both forward and reverse agitation is best, I think. I know my jobo does something like a revolution and a half in one direction, and then reverses it. I can imagine stainless steel reels and tanks working very well, due to their ease of acquisition and their straight profiles. some tape around the lip of the lid to reduce any possibility of leaking and you're off to the races.
I also have the Jobo 1509 roller set. No motor so everything is done by hand. Forward and reverse rotation is no problem! I use my Jobo tanks but the rollers can be set to different configurations so the Paterson or Arista Premium tanks work as well.
Before I bought the Jobo I converted a Beseler motor base to hold a Jobo tank by the magnetic base. Using that sold me on the merits of continous agitation.
A Paterson System 4 tank with a couple of heavy duty rubber bands works fine on my Beseler base.