Showed this fact to a friend recently with his Sunbeam 6910 & 0480 combo. I popped over with my Eureka Mignon to show him how an improved grinder effects things.
Not suprisingly, very noticable improvement in flavour between grinders, both dialed in spot on. The Mignon has consistant particle size going its way and a distinct lack of the dust the Sunbeam cranks out. Not to mention its a damn side quieter and retains far less grinds.