I purchased a TX-NR709 a couple years ago. Worked great until six weeks ago, when it experienced what I now know is a common problem: no sound, no networking. The boards on the 709 units just burn out.
The tech at the warranty repair center says he believes Onkyo finally identified the source of the problem after several model years' worth of units shipped, and I believe they had fixed it by the time they made this 727.
However, I'll tell you about my warranty experience, in case this sort of thing influences your purchasing decision.
The night the sound cut out, I researched the issue and found thread after thread about it on Onkyo's support forum. I called and the rep authorized an out-of-warranty repair. The forum mod named a specific agent to talk to for faster service on this specific issue. I contacted him (Jose) and he told me he issued an authorization to the repair center nearest me (40 minute drive).
I took the unit to the center, and Jimmy -- the tech there -- said he had no authorization from Onkyo for me. He looked at me with sad eyes, and said, "They do this all the time. I had one guy stand here for two hours talking with them and refusing to hang up until they finally sent me the authorization by email. You just have to keep hounding them."
So I sent an email while I was talking to Jimmy. Within a few minutes, Jose emailed back and promised to send the authorization code within three hours. I replied and said I had left the unit there for repair, and would rely on his promise.
Two days later, I asked for confirmation that the authorization (Onkyo calls it an "ewan," which is probably something like extended warranty authorization number or some such thing) had actually been transmitted and received.
After another two days of silence, Jose emailed me, and only me, that the ewan had been transmitted to the service center.
Another week later, and I ask Jimmy at the service center to confirm that he had the ewan and was working on the repair. He replied that day that no ewan ever arrived.
I said a few bad words to myself. Then I emailed everyone and demanded that Onkyo send the ewan to everyone, so we could all see it. Jose finally sent it that night.
I asked Jimmy how long it should take. He said two weeks -- some time to get the shipment from Onkyo and a few days to do the work. That was January 17. As of Feb. 4, Jimmy said the repair module still hadn't arrived. It's now Feb 10; no word yet.
I'm unimpressed with Onkyo's quality control lately, and am frustrated by the length of time it is taking Onkyo to ship a simple repair module board.
But I'm far more irritated about a lead service center rep lying repeatedly about sending and having sent an authorization code.
I've used Onkyo products since the early '90s. Always liked them. Won't be buying another one or recommending them to friends.