Have been a few 3D Blu ray players had, which I still have two combined devices (Samsung BD-D6900 LG & HR929C). The BP420 is the best player I had so far, although it looks a bit cheap and the small mounting depth can not be expected, such a picture and sound quality. As written by others, read the player all formats, I have also m2ts and .flv what very few players can. A 34GB-mkv.Datei is played without any lag that grabs the big Combi brother LG HR929C not produce lag or image / sound skips. Through my large MP3 collection can be navigated quickly, while searching the player plays the song started on until the new selection. The sound of music files via the analog output is great, no player has previously sounded so good. Listen over a high-quality stereo system, because you can tell the difference. Music is dynamic and in all areas of quality sound. So I am deeply excited and have the players ordered for my father. The only drawback is that it does not display the stored cover in MP3, but that's to get over.