If you have a DTS setup I think you will be fine for a long time. I have a B&K ref30 with 7 speaker outputs. Big deal where the hell am I going to put all the speakers? 5 channel suround is just fine for me. Last year everybody was freaking out about DTS ES. I think there was 2 movies out in that format at the time. Such a big deal is made about SACD and DVD-A,when the movie soundtrack formats are the biggest joke. You would need to buy a new pre/pro every six months to keep up with it.
Tim
Tim