The super has a factory installed PID which looks much nicer and is probably more reliable/built better. The Super has some better internal components, but is in many ways very similar to the JR. The smaller footprint of the JR is a plus.
Here's my main tiff, Im going for a double boiler with pid for brew temp accuracy, amongst other things. The Junior's boiler does not have auto-refill and the after-market pid operates in .5 C/ 1 F increments. In conjunction I'm led to believe the JR will produce more consistent brew temps through the group head. (I am concerned how water sensitive the PID faceplate and internals are, I know some have ruined them by getting them wet). However, the Super has a larger boiler to combat temp fluctuations while pulling a shot, and you get a much more attractive PID. However, the pid on the Super is 1 C/ 2 F increments. As stated the Super has a few better internal parts.
I really don't NEED the larger boilers found in the super for producing drinks; I just dont predict needing the extra horsepower for my home use and do not need it at the current time. The cost of the Junior is less but almost negligible especially if I wait to find a Super discounted.
I am probably splitting hairs but I want to weigh my options carefully being I will most like own this machine for many years. I also dont know what extent the temperature fluctuations are on the super when pulling a shot, maybe someone with the machine knows...
Any advice or observations would be greatly appreciated. What do you think?



