I'm deciding on these three because they are from high end companys. Here is the info: denon AVR-1803 AVR-1803 Harman Kardon AVR-325 AVR-325 Onkyo: TX-SR600 *on the onkyo site just follow the links to the receivers and then find TX-SR600. I have narrowed my decision to those three. I was wondering if anyone on these forums have any three of those receivers and if so, what do you think of them? Anyone is welcome to give input.