I own a pioneer 6x100 watt receiver and the salesman at the Goodguys told me that if I bought the RF-7's or the rf-5's that I would most probably burn my receiver out and I would destroy it. He said that I would be wasting my money on buying the RF-7's or RF-5's because my receiver wouldn't be able to allow the speakers to work probably and that I would lose performance. He told me that my best bet was to buy the RF-35's. Is he right? I need help thanks.