I am looking to purchase a really good sound bar - I am open to suggestions - there seem to be a lot of them. The Sony HT ST9 looks good but the Bose 130 also looks good - both are highly rated. I also don't understand exactly how a sound bar works - I know it's virtual surround but does it matter if the source is 2 channel or 5.1? My cable box and blue ray support 5.1 but the TV only supports 2.1 - so it's confusing to me. I would appreciate any help that anyone can offer. Thanks.