I have heard both the S2s and the VRM50s, and intend to audition the M3s soon, but i'd like to get an idea how they sound compared to the other two. I'm not concerned on price vs. value, just the sonic qualities. So if anyone has ever had the chance to compare the M3s to either or both, I'd like to hear your comments.

I like the S2 better than the VRM50. The VRM50 if I remember goes deeper but I find that on the higher notes it's too harsh and there's some sibilance that I didn't find as much in the S2.