Thank you for inquiry.
1). Below spec having in Q10 Pro but not in Q5 Pro :
16GB EMMC Flash
LED Panel and Smart Touch-Key
Aluminum Housing and Low-noise Fan ( for HDD Cooling )
Initiative Clamshell Internal 3.5'HDD Docking Design
2).Yes, some of the audio codec have been support by Himedia since last few generation, there is no doubt about it. More detail of the supported codec could be found at the below link :
http://www.futeko.com/products/MP068.php3).
Video File Format: FLV, MOV, AVI, MKV, TS, M2TS, MP4, 3GP, MPG, 3D MVC, BDISO/BDMV Blu-ray Simple Navigation
4). Dune is different product, there is no compatibility relationship.
5). Not really. Dune is traditional media player, Q10 pro is Android TV player, beside play the role of media player, it do Android online streaming and running other android apps functions such as file management, email, screen mirroring and etc.
6). Yes.
7). Yes. 7.1 is not new to Himedia, it has been support since last generation.
8). Streaming over network is not just depend on the end point, you need to have good WLAN or LAN, good performance NAS. Q10 Pro is already equipped with the best IO such as gigabit Ethernet and dual band 802.11ac WiFi. The streaming throughout has no questions if you have good backend network.
Nice seller. Just now cod with him... :-)