Thanks Bridgman and Rik. That's a good point on the front speaker arc. Everything will be pretty close together; the front 2 speakers will only be about 5' apart. Hopefully that will minimize the lack of an arc. Part of the system design is taking a 3 and 6 year old "demolition team" into account. The viewing/listening position will be up against the wall; about 12' from the center speaker. Will the EP350 sub overpower the other speakers? I'd rather have too big than too little, but if it's just wasting money then I would get a 175. I would like to use Axiom for everything for color coordination (ie: WAF).