The volume control is different. The 42's is like the C100 & C200. I like seeing the numerical readout and being able to duplicate any spl. I read you had the 352/42 combo. Here's a fun thing to do. Set the 352 meters to "hold". Change the display on the 42 to "db". Listen to some music softly and note both readings. Raise the 42 10db. Notice the 352 is putting out 10 times the power. That's supposed to happen on paper, but getting 2 machines to respond mathematicly accurate wins the cake. I guess they don't call it McIntosh Labratories for nothing. I haven't heard the 41. I would bet they sound more alike than different, but I like the 42's volume contol both technicly and visually.
