I don't have a 522, or I dought I ever will, but I may get the 942 and it's likely the same. I messed with my sisters 522 some and I don't like not being able to erase dvr history and timer history. I also couldn't find a way to save some cid history without erasing all of it. Hope they think about changing this more like the 721/921's, as they are simple to operate and work good. I even had a hard time finding the timers on the 522, but I didn't mess with it very long.