I'll throw the 1008 in here, as it's not much different. While I haven't tested this AVR in a dozen ways it's capable of performing, I have ti say I'm damned impressed with the coolness of it while being challenged with high volume listening. The heat sinks inside are well designed and worthy. I cranked some tunes for a while (no processors, no EQ, etc..) and when I expected to have my fingers singed when I touched the top...holy *****...it was actually freaking cool! Seriously, the top (right over the amp area) was barely past warm. I must say, that despite the bad things I've been hearing about modern day AVRs (this is the first upgrade in nearly 10yrs for me) and their inherent flaws (especially w/Onkyo HDMI CX's, etc..) this AVR impressed the hell out of me.
No, I still haven't tested it for "all it can do", and hell...I might not ever get into that (I just can't find the time these days), but if it performs in just two CH mode like it does now? I'm good. I actually purchased this unit just to be a "head unit" (pre-outs) for some older amps I've had. And I always knew this was overkill, but hell....I'm rethinking this now. I will probably still connect a dbx BX-3 (350x2@8) for the mains for 2CH listening, but I may well dump my overkill plan to have 3 additional dbx BX-2's (250x2@8) for other channel drivers.
I'm glad I've had time in making this decision, because I can always sell my other amps. I'm thinking about traveling lighter these days (long story), and this AVR helps make that a real possibility for my audio equipment. I will still use external processors for 2CH listening, but will probably defer to what appears to be superior DSP (Audessey, etc..) changes since my last purchases.
Sorry I haven't been specific, but to recap: I can only vouch thus far for the NR1008's (sorry, not 9 series) awesome design to power well and stay very cool. This in itself is hard to find. Or so I found the past two decades when anything over 90wpc was involved.