My overall impression of the combo of Classic Evo Pro & MDF-55 grinder is very positive so far — the two products compliment each other well, and had me making surprisingly decent espresso drinks fairly quickly (after I worked out the optimal grinder setting to suit the Classic and the coffee I've been using). The build quality of both machines seems to be very sturdy, and I've had no trouble operating either so far. The Classic arrived with one of the rubber feet missing (definitely double check that yours is complete!), but a quick phone call to Gaggia UK sorted that out right away.