It is true that the control interfaces are on the streets, whether the HUD, the Android app or access the Web Control Center (a lil embedded Web server). Navigation is heavy, it's ugly, rather slow and rarely intuitive.
The embedded media player is also really very limited in terms of supported formats.
Web radios are virtually unusable; Navigation hard long minutes interspersed with lists of cargoes and is embedded in the proposed mass (which is not bad, except that the interface is not suitable).
The remote is not backlit (and given the number of buttons that would be nice).
However ... except that there is no fault with the automatic calibration worked perfectly at home, I have almost nothing to touch (the piece lends itself well).
The number of entries is extravagant, opportunities for huge configurations.
In its main use: play movies plugged into a HTPC is a treat! My JM Labs Chorus speakers are better exploited, it can be a little fishing in the low end but it is correctable without any particular problems.
However I could not test the upscaling (the PC supported).
The conclusion is that the amplification part is very convincing (it's good, that's why I bought it), however the related functions are completely upgradeable (especially when you can use a kind XBMC Media Center much more user friendly, fast and powerful).