After a few days of testing, I have so far not met incompatibility with different formats that I gave him to read. It restores very well Dolby 5.1 and DTS sound. Two flats, on the first iso DVD formats, it does not read the menu but only the main movie. Perhaps a maj next firmware will fix this slight defect, and the second on the remote control that is not very responsive if we do not position facing the reader. Personally, I use a Harmony Universal Remote which allows better transmission / reception. Via the network, the speed is 64 Mbps max, which is quite comfortable for transfer via Ethernet. A small note in passing, about the firmware, take the version offered via the drive and avoid the one available on the LaCie website that caused me to freeze her and problem solving (black screen on all selected HD resolutions including the LaCinema interface). Perhaps the shift has not performed properly or bad luck. I recommend this product for its sober and discreet appearance, and also for ease of use and fairly intuitive menus.
