Denon AVR-1913 - $329 in-store at Frys

This was in this weeks newspaper ad. One of those that requires you to visit the store; just shows "Major Name Brand" in the ad. Still showing $579 online.

I am choosing between the Onkyo TX-NR515, the Pioneer, VSX-1022, and the Denon 1913. While both the Onkyo and Pioneer can be found cheaper than $329, at this price, I'm leaning heavily toward the quality of the Denon.

I would welcome any debate over these choices.

Thanks.