One caveat with Onkyo is that service isn't that good. Just reaching someone at Onkyo is an exercise in frustration. I would also say that sound quality isn't going to be that different between these models and your source as well as your speakers will affect sound a lot more. Go for the Denon - it's no slouch. If you're still deciding, you should add Yamaha to your list - they are comparatively priced, have similar features, and have great reviews as well.