I owned D3 device and always carry it with me. I am hardcore fan of music of all types. So it is must gadget for me. It is having very nice audio support that it can play almost all kind of formats. It is supported with android so I can have apps also installed in device but it is not the main use.
Games and apps are supported but its main function is audio video player. Video quality is also very good. It can play HD video with good screen display. I loved its supporting files which can help me to carry any formated files. Overall I would say tiny nice android device made for audio and video player!