I'm looking for the final 3 surround speakers in my 6.1 (couldn't accomidate 7.1) setup. All must be wall mouted (WAF) with the 2 surrounds slightly behind the listening position on the side walls and the rear speaker 6 feet behind the couch on the rear wall.

Three QS4's seem like a good idea but are they worth the $60 a speaker even though they lack the bass response of the M2i? I would like a little bass response to balance out my fronts and three QS8s are a little more than I wanted to spend. I don't do any SACD but like multichannel music and there is the whole dipole/direct debate over that. Any ideas?
Thanks.