I'm leaning heavily towards the 950 (though my final choice is not yet made). I'd like something cleared up for me. If a powered sub has an adjustable crossover, how should I set it in order to take the greatest advantage of the 950's flexible settings? Should I set it as high as possible to let the 950 do the work? Thanks. Also, while I will also be getting a speaker system (5.1--likely Aperion, Axiom or Paradigm) I have a old pair of Celestion DL6's, dating back to 1986, that I still love. How well does anyone think I can integrate these to make a 7.1 or are they too out of date?