I have had my Digitheatre DTS for quite some time now and am thinking its time for an upgrade. I have been very happy with the sound I get from this system and would like to see an improvement when I upgrade. Am I going to notice a huge improvement in sound with a modern all in one system or to really notice a difference am I going to need to go the separates route. It would be nice to know how well the Digitheatre holds up against new systems, if anyone else has any experience comparing that would be helpful. Many Thanks