Quick, even grind from a professional machine built to last.
Negative Product Points
HEAVY and BIG and not made to fit in a kitchen at home. Sweeper star leaves some grinds in the doser.
Large flat burr set makes quick work of beans. Grind is super even with little or no fines or dust in the resulting grounds. I am finding that the larger the burrs in diameter the better the quality of the grind (if the speed is not excessive and the burrs are in good shape).
Some comparisons: Compared with the Rocky, this is much better at producing an even grind. Obviously the Mazzer has stepless adjustment and the Rocky does not. The Macap m4 (also stepless) produced a very similar grind to the Super Jolly and I would say it is equal in grind if not speed, mostly because it is a smaller burr set more comparable to the Mini.
Got this used with lots of dings and scrapes. I sanded it a little and painted it primer gray. Little by little I am replacing doser parts that are excessively grimey or scratched. For the most part it looks like it was at least a year old and used in a coffee shop. Timer switch needed replacing as well, seems like someone must have tweeked it too far at some time. The restoration is somewhat fun and rewarding though I will probably spend as much on parts plus the used machine as I would have on a newer machine.
I learned that you should have a hand crank or inexpensive conical burr grinder if you want to grind for drip or press. Using a Macap or the Super Jolly to grind coarse enough for these methods results in static-loaded grinds flying all around the doser. These machines are designed and built to grind for espresso.