Summary: I am still having mixed feelings about the AVR-591. Now that I'm used to it and was able to solve its most frustrating problem (requiring reset every day, discussed below), I decided to keep it but hope to solve its remaining weakness (remote control weirdness) with a Harmony at some point.
Summary: Since "7.1" turned out to be a waste of time and money.......7 channels is mostly a waste, since they don't mix 95% of movies (even the new Blue Rays) in anything but 5.1, it's all fake data and doesn't sound much better than just 5 channels.
Summary: I have this unit installed with two floorstanding tower speakers, two small rear speakers, a 10-inch powered sub, and a small-to-medium bookshelf center speaker. Connections: Simple, quick, and straightforward.
Summary: This is my first real receiver, and I bought it because I wanted good sound and to better manage my devices. It is now the hub of all my devices: Tivo -->' S-Video + stereo analog (What the receiver calls the iPod dock input) Home Theatre PC --> HDMI Nintento Wii --> Component Blu Ray player -->...
Summary: I won't spend too much time repeating what the other reviewers have said, but I agree this product seems a very good value considering the price and features. Note that my setup is all HDMI, run through the receiver and out to the TV.
Summary: The wife and I bought this receiver mainly to simplify our home theater setup by having all AV inputs fed into the receiver via HDMI with only one HDMI output to our 50-inch Panasonic LCD HD TV, and I must say sound and picture quality from all input sources of our home theater system are first rate...
Summary: Talk about a modern feature set. Whether or not firmware will upgrade HDMI 1.3 or not on your existing system, choosing a system with an HDMI 1.4 repeater for all inputs is a good idea and this unit certainly has the skill to do so.
Summary: I bought the Denon AVR-591 to simplify my home-theatre setup and so far it's working perfectly. The Quick Select buttons also power-on the unit and so my preschool kids are able to press just one button ('Quick Select 1') and get the TV to work.
Summary: I love playing around and experimenting with different sound settings. However, this receiver doesn't make that too easy. The manual is hard to follow, and they try to make the receiver simple for the user by having make most of the decisions for you.