Jim do you mean 2500 tanks or did Jobo make a 4x5 reel for 1500?
I keep hearing how cheap Jobo processors are in Europe I guess that's just Germany?
You don't even need the processor to use the 2500/2800 tanks. They'll roll just fine on a motorbase. A warming bath can be made to handle the chemicals. For C-41 and RA-4 the steps are short enough that the chemicals don't cool down in the tank.