I just traded in my Paradigm V.3 Esprits fronts, CC-270 center, and PDR-12 Sub. My dealer gave me almost 90% of my original purchase price I paid 12 months ago towards my new stuff!! Now I have Monitor 7 fronts(V.4), CC-370 center(V.4), and a PW2200 Sub. My HT absolutely sounds fantastic now. I plan on re-visiting my dealer in another 6-12 months to do it all over again.
On a side note, I thought my house was going to collapse during the sequence in "I Robot" when Will Smith was surrounded in the tunnel while being attacked by the robots! That PW2200 sub pounds, and it's not even broken in yet.