I am surprised that no one here has pointed out the fact that the Onkyo SC-5509 uses a brand new video processor, HQV Vida VDH1900, which when first announced and shown at Cedia two years ago, had some A/V pundits call it the best video processor for watching low-resolution videos from the internet, as well as doing top-notch de-interlacing and upscaling like other current top-of-the-line video processors.
I am a current owner of an Onkyo 886 A/V processor and LOVE IT; I use it daily an average of 10~12 hours for the past 2 1/2 years and it has worked flawlessly; Based on my experience i plan on staying with Onkyo when it comes time for me to get a new A/V processor.
One big improvement, i think, would be if Audyssey XT32 would allow the user to calibrate the room separately for music and video, and make these different Audyssey calibration settings easily available on the remote control without forcing the user to dig through layers of menu options.
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Marcos