Seems you can get a Davs550 for a fair price right now as it is coming to the end of its production. I already have a DVD player but for about £250 you can buy the above. My question is, will it be as good as the separate HTSL7a. They are similar in power speaker wise (I think) and the DAV is now a lot cheaper. Can I go wrong buying the DAV instead of the SL7A and if so why?