I have decided on HK for my new receiver, just don't know if I should go with the AVR225 or AVR325. Wattage is very similar, and in fact the 225 is actually slightly higher (55 W vs. 50 W) in surround mode. It seems the main differences are: 1) 225 can do only 5.1 while the 325 does 7.1, 2) 325 has component video switching and 225 does not, 3) 325 has 8 preamp outputs & 225 has only 1. I honestly don't think I will need anything more than 5.1 capability over the next few years and I don't care or have a need for component video switching, so is there any good reason to purchase the 325 over the 225 ??? Are there any other significant advantages to the 325 that would sway me to spend the extra $$$ ? And can someone explain what are "preamp outputs". Do I need 8 of them ?