I cannot honestly recommend this machine. Indeed, with great disapointment and some satisfaction, I threw it in the trash today and ordered a Rocky.
Positive Product Points
Good value for price; mostly consistent grind sufficiently fine for espresso; infrequent static problem
Negative Product Points
must be cleaned frequently to avoid jams; will not grind oily or large beans without feeding the beans into the burrs with a pointed object--caution!; adjustment of fineness/coarseness of grind results in loss of consistency and inaccuracy of fineness settings
The Solis Maestro is overall a grinder mediocre to good in effectiveness and usability. Its major weakness is the annoyingly constant need to readjust the fineness setting because of loosness of the collar secruing (or not) the burrs. If no adjustments are made in the fineness setting (an impossibility really because of variation in beans) it functions well for a time. Occasionally after cleaning, a frequent requirement, it still jams. After using a Capresso 551 for about a year, the Maestro seemed very impressive, in particular its in ability to grind beans sufficiently fine for espresso.