I have eyes on two models MS 906 http://www.mordauntshort.co.uk/products/906.html MS 908 http://www.mordauntshort.co.uk/products/908.html The 908 are the flagship model for MS and it has a passive sub. Will this be over powering as home cinema set-up. I use a Marantz SR 5300 AV amp. I was told by Richer Sounds that it will be perfect for HT use. Any suggestions?