Amp or Receiver?
Hi dirtyD,
You stated that you wanted to buy a new "amp"... yet the two models you mention are receivers. A receiver is an amplifier (the part that turns the low voltage signals from the source into enough voltage and current to run the speakers), a pre-amplifier (the part that switches between various sources and adjusts the volume of the low voltage signal), and tuner (AM/FM radio) all rolled into one chassis. Sorry if I'm sounding snooty. I don't mean it that way. Many folks new to the game are confused or just don't know.
If you're looking for a receiver, and not just a separate amp, then the two models you listed are as good as any in that price range in my opinion. I've always liked Marantz myself, but the Denon is a close cousin, and Yamaha perpetually gets high ratings also.
For further assistance it would be helpful to know whether you are looking at 2-channel stereo, 5.1 channel surround/theater, or 7.1 channel surround/theater. You don't want to have to spend more for something that you're not going to use.