I have disagree with those who say you won't likely do this or that with your system. Let me tell you everyone pushes their system to hard from time to time and with HT systems with all the exaggerated LFE and special sound effects you will be pushing system far harder than you can imagine unless you have very efficient speakers. I was in the repair branch of the company for 10 years, but even though when I moved on to installation and then engineering and design when systems started failing and there didn't seem to be a reason or an easy fix I was they called on. 4 ohm Speakers with less than 96 db efficiency were one cause of many amps failing. Speakers failing was usually caused by amps clipping because they weren't designed to perform as promised, which is the case here. Another issue was folks were trying to use home Stereo speakers most of which didn't have the necessary dynamic range with power available or if there was sufficient power for the level the speakers couldn't handle it. I admit I use NAD AVR with my M&K speakers in my RV and the listening space including the Kitchen is about 13 wide and 22 ft long. The systems runs out of power even with NADS soft clipping circuits. I haven't blown any speakers, because I back off the levels at the first sign of stress. All three front speakers are identical, this saves me a lot of grief as the sound levels match the sound spectrum is the same from all three speakers and the subwoofer is strong enough to match the 5 total speakers. But I have watched numerous movies lately even on my big system at home where I normally use around .5 watts for the spoken word and the peaks and low frequency signals are driving my amps to over 100 watts per channel. Thats a totals over 1000 watts guys and speakers are rated at 95.5 db at 1 meter and I'm not counting the power to the side speakers which could be another 100 watts. So don't ever get the idea that you won't be using your power. Speakers are not resistors for sure and are always more demanding with their reactive load requirements that resistors don't have. If you will read the speaker tests at Stereophile and HiFi News you will find very few speakers that have a friendly impedance curve anymore. Speaker designers assume everyone is using SS amps that can drive below 4 ohm loads and truly there are very few AVR that can successfully for any extended period. Just look at the AVRspecs of the unit under discussion. There are reasons Better Klipsch, JBL, M&K, HT speakers systems are expensive. Sure you can make an older EV, Altec or Frazier system work, but thats because they were designed to produce 115 to 120 db with out stress when configured properly. So do your home work and if you have make a compromise do it with understanding, we almost all have make choices we would rather not make. Remember speakers are always the most important selection that you make first.