I am finally upgrading my home theater. Just hauled the old 36'' 15 year old tv out of the house. It is replaced by a samsung 46'' 7500af 3D tv. My sony DA50es receiver now needs to be replaced. An onkyo tx-nr818 will be replacing it. I have 4 acoustic research ar216ps bookshelf speakers, a signet model AP-A100 sub and a Paradigm CC-50 center speaker. Are these speakers still good? I think I want to add tower speakers. My budget is not unlimited. I have been looking at the Onkyo SKS-HT870 Home Theater Speaker System. Which setup would sound better for movies? Any suggestions or opinions would be appreciated.