The picture quality on Mobdro can range from SD to almost HD, you're not getting 1080p on Live TV streams.
HDcinema and Showbox have 720p to 1080p links that you can stream, then inside of Kodi there's also Genesis which is hardbody and has tons of 720p and up links.
I have an Android Box, Roku 3 and Amazon FireTV....really impressed by the Amazon FTV and would recommend it over everything else because unlike the Android Box which I got last week, it has certified apps so you can have standard stuff like Netflix/HBO go with interfaces meant for remotes and also in full HD, where as the Android TV boxes use phone apps meant for touch screen and in Netflix's case aren't HD.
Roku 3 is the best for ease of use, but you can't put any of the pirating apps on it, which you can with Amazon FireTV. Roku 3 is in the bedroom now, Amazon gets the living room and the droid box is being saved for when I get an 4k TV.