I've got a m160, that I hardly ever use, but then again, I can't bring myself to parting with it either. If someone said; "here's $400"...I might have to squirm a little...but would probably refuse. Not much use in selling decent equipment at this point in time for me.
It [typically of some ribbons] has a VERY low output. Additionally, it is kinda a "dark" sounding mic...if that means anything descriptively or not to you. If I had a pair, I know I would hang on to them indefinately for sure, but what I need is a really good QUIET preamp with some gain for the sucker ....something I'm not really up for shucking out the $$$ for at this point.
I just got this wild-assed banjo as of late, and I gotta shove this sucker up on that and see how it sounds. On paper, seems like it ought to be a perfect match.