I have all the live TV channels working perfectly on my M8, there in HD too were as on the openbox there SD. Stick with the IPTV mate its way better. Will have to subscribe to a good IPTV service for Kodi, I can advise a good service if your interested ? more expensive than openbox service but you get what you pay for and the service I have has been rock solid no pausing or freezing like on the openboxes.
Hope this helps ?