Since my new HT set-up "debuted" in February, I've really enjoyed the overall performance of the system. I've noted, however, some weak points in system that need addressing, in particular the performance of the sub and the sound quality from the surrounds. I've ordered a new sub (SVSound - Cylinder Subwoofers) to replace the existing one (a new BIC H100), and am now concentrating on upgrading the surrounds. In the current configuration, I've two old RadioShack Minmus 7s as L&R surrounds.... ...and brand new Cambridge Soundwork Newton Series II S205 Surroundsfor the 2 rears.... The RS really sound tinny, weak and underwhelming. The CS Newtons I am pleased with— good sound dispersion and the ability to go bi-pole or di-pole. So I've a couple of options... a. ditch the whole surround set-up and get 4 matching surrounds b. ditch the RS speakers,; get Newton IIs side surrounds to match the rears I've a budget of around $400 for this. Does it matter if my fronts & centers (JBLs S-Series) are of different manufacture than my surrounds? It's a pretty good size room (17 x 18 with 9' peaked ceiling) so I want to make sure the surrounds are 'hefty' enough to make an impression. Any advice, opinions or suggestions would be appreciated.