I have an AudioTron. Actually, I got two of the first ones off the line. Then I sold them since the internal software was a bit primative at the time. A while after that I bought a couple Rio Receivers. Since the official server software sorts alphabetically I dumped them in favor of AudioTron again.

Rio Receiver Pros (the way I see it):

• Built-in amp
• Cheap ($100-$150)
• 3rd Party support

AudioTron Pros:

• Optical audio output
• Component width
• Easy to read display
• Official software updated often
• Official web server built in
• Official support for streaming Internet radio (I never use it though)
• No server software to load on a PC

That said, I am not trolling either. I still check this board a few times a week and will probably be buying some more Receivers soon. It's just that for use in a stereo rack, AudioTron is the winner thanks to digital out, component width, and readable display. The Receivers I plan to buy would be used in bedrooms, bathrooms, and stuff like that where you can just hook up speakers and be done with it.