The new (2019) Pro version also supports Dolby Vision compatible display at 4K resolutions, one of the first to do so. The Pro version also supports usage as a PLEX media server and has 2 USB ports for storage, or connects to a NAS for media storage. rumbarrel is correct in that the processor upgrade is not that significant, but that’s not an “OMG” issue as Shield has always been the most powerful off-the-shelf Android TV box, far and away. PLEASE NOTE: If you ‘save’ $50 to buy the ‘tube’ instead of the ‘Pro,’ you lose all USB ports (and gain 1 measly microSD slot) and you lose ability to host PLEX server. Definitely worth the Grant.