James....

I have a pair of 6k's in a room roughly your size with 5k centre and 5k rears. I cannot shout loudly enough the difference of the 6ks over the 5ks. Even the wife recognised the massive difference. There was simply no comparison. Pretty much everyone agrees that the 5k5 and 6k are not too far appart in sonic qualities. Go 5k5 !!!

C

2 Meridian 7200SE Speakers, 17 Meridian DSP750 Speakers, 8 Meridian DSP730 Speakers, 8 Meridian DSW-600 Subwoofers, 3 Meridian DSP640.2 Speakers, 24 Meridian DSP320 Speakers, 3 Meridian 271 Digital Cinema Controller, 7 Meridian 218, 1 Meridian 818 v3, 1 Trinnov Altitude 32 Processor, 1 Trinnov Altitude 16 Processor, Barco Freya+