You already have received good advice so I will just add to it. I agree that the Def Techs are not even close and agree that Joseph Audio and Vienna are good substitutions.
If you go with the V's I don't think Parasound is the best match but it is safe. I would look at Odyssey or Electrocompineit. (miss spelled)
Another great speaker that requires a REL sub to compete is the Intuitive Design Summit, Delta Summit, or Gamma Summit. I heard the Summit which is their entry speaker beat out the 5A Sigs.and only sell for $5200 with stands but you must put a REL with it.
If you go with the V's I don't think Parasound is the best match but it is safe. I would look at Odyssey or Electrocompineit. (miss spelled)
Another great speaker that requires a REL sub to compete is the Intuitive Design Summit, Delta Summit, or Gamma Summit. I heard the Summit which is their entry speaker beat out the 5A Sigs.and only sell for $5200 with stands but you must put a REL with it.