bean, i'm with you on the decision between this and the 671...only i figure i'll never trade in my v3, so i'll really only need the 671 to record.
i think right now i'm leaning toward the mt more so...i think the future updates will bring it up to par, and i think it'll be a pretty solid 24bit recorder, at least as solid as the jb3 is a 16bit recorder. plus powering it seems pretty simple.