Help, I urgently need to upgrade my old Yamaha Centre speaker to something where I can actually hear dialogue. I am using AE120s up front with AE109s at the rear and a REL Q100E sub in a fairly large room. My problem is that I have a custom built AV cabinet and the Centre speaker can not bigger than 510mm d or 170mm h, There is no limit to depth. This rules out a lot of good centre speakers. I have a shortlist of speakers: System Audio 70AV Mission 78C Ruark Epicentre Boston VRMC Anybody got these and what do they think? Are there any other small centre speakers that will work with my other speakers? £500 is my limit.