I have been looking at recent posts of Marantz 22xx series. I have a 4270 that is currently out of rotation but reading these posts makes me want to put it back in. My question is whether the 42xx quadraphonic series is the same as the 22xx series sorta doubled, or were compromises made on the quadraphonic to get more stuff into the box? I guess I could compare stats but was wondering if anyone had units from both series or more insight into the question?