I auditioned both, when considering monitors for my living room. I went with the M20s. Sitting upon killer stands; they are amazing. Sub necessary, of course, in my living room, but probably-not, if you're putting them in your bedroom. The M20 stands are poor. It was awhile ago, but as I remember, the M20s were better (to me) in all ways. These are VERY revealing speakers. Fasten your seatbelt: they will highlight every strength and weakness in your system. peace, warren
