More accurately, the 650 would be the "silver" standard, with the gold standard being the newer Blackvue 750 series (and even the 750 is soon to be the silver standard, when the new 9XX series, with 4K resolution, appears some time this year). My own experience with a 4-channel 750 setup (with the larger cams facing forward and back, and what would normally be the rear view cams serving as side window cams) has been interesting. I have retrieved video from the cams for several traffic incidents I have witnessed at close hand, and found that there were occasions on which I could not identify the license plates using the forward/rear cams, but could identify them using the side cams (as when a SUV passed me on the right, and then shortly thereafter side-swiped another SUV directly in front of me). On another occasion, two motorcyclists were driving in a very hazardous manner, and I could not identify their license plates with any of the four cams. I'm not convinced that even a 4K camera setup could have done that adequately.