Volume knob and buttons look plastic to me. If they are then that's gonna feel downright tacky on a case that will undoubtedly cost several hundred quid.
As jim stated the knobs could be lower build quality, the res and responsiveness of the touchscreen is also something to wonder about. Also, you do not go to your htpc to configure it, Tt would've been better off providing a good remote.
It looks a decent enough unit. Crazy HD resolution on that screen, does blast wide open the options for use on it tho. Much rather a different black finish, but the example looks ok.
ATX mobo and space for a full rig by the sounds of it.