The TVAddons is a customised version of KODI. It is not approved or supported by KODI, but if you do not have any knowledge about KODI, then that is the one to start off with because it will already have most everything installed you need so the learning curve is not needed. If by chance you already know KODI, then the TVAddons only will bog the device down some by installing apps that you do not want or need. Since you asked the question, I take it you are not familiar with KODI, so install the TVAddons and get familiar with the workings of KODI. When you feel you are versed then remove the TVAddons and install KODI. The box has enough memory to install both, but I suggest you not do that.