I own, and love the Revel M20s. While their extension is quite amazing, they require a sub (for me that is). They, also, require, like all monitors, killer stands, to sound their best. The stands that come with the M20s are horrible. (but then, again, the stands that come with the 805s, are equally poor) I use the Sistrum Mini Monitor support system. While pricey, it cannot be beat, for taking your monitor to places where no other stands can. My review is in the archives.