I have the Midnight MX2 variety of this box.
Some pointers:
1080p is still in development (at least for the MX2)
It runs XBMC very well (far smoother than a Pi)
The manufacturer is actually Matricom, firmware downloads and forums are here
http://matricom.netThis ebay seller looks like they have added some repositories and enabled some of the key plugins (1Channel & IceFilms for example)
Note the 'Please Read' section of the eBay listing - there are some Wifi issues with some hubs and the online content is dependent on 3rd party servers (i.e. playing stuff might be slightly more troublesome than advertised)
Happy to answer any specific questions if you have them.