Had an HD-AVP for 3 weeks now
Plusses - Superb sound, especially on USB, variable gain inputs, variable gain all speakers individually, crossover for sub, multiple HDMI, digital and analogue inputs, video performance excellent, assignable inputs, good FM tuner - overall very pleased with sound and good value for money
Cons - Confusing remote, many functions do not work, a GUI that does nothing (it is supposed to be configurable via remote), outputs sound on rear channels even in stereo, display goes off when it should stay on, audio input level changed by itself on HDMI after a few days, you can enable or disable inputs, but if you disable 3, then some others disappear without being asked, GUI appears at random if you switch on TV when listening via USB
I suggested to the agent that the firmware and control circuit needed a bit of revision to overcome these deficiencies, but have not had a reply (it is always possible that the factory are busy)