That definitely is a listener preference there. I've had success with rear speakers, HillBillySQ has had success with rear speakers, and Erin has offered the best advice I've ever read on how to tune rear speakers. Most people will not run them, as it's just another level of tuning that can already complicate everything else going on. The simplest setup I've ever used with rear speakers though, was a comps set up front, coax in rear, and delayed the rear speakers a LOT. It was quite magical, VERY enjoyable for daily listening. In an SQ comp though, I'm sure they would have ripped that thing apart with criticism.