I believe folks like Alan think of the broad-band auto-EQ in the 3805 and 1400/2400 as not detailed enough to be helpful (as suckouts are generally narrow-band).

If it had double the bands then, maybe - 4x, then probably. I don't think it has to do with your mic.

I don't think the feature is useless, but it doesn't do as much as one would like it to.