Awesome to see live data and even able to graph multiple live data items simultaneously! The screen is small but it didn't cause me any issues (and I'm slightly far-sighted). I appreciate the compact size of the unit so I can keep it easily in the door pocket. Only thing that was a little disappointing was that my car (2009 Acura TSX) is supposed to support freeze frame data according to the service manual, but the reader says that my car doesn't support it. Maybe I'm doing something wrong - I don't know. Not a big deal, anyway. I can just scroll down and make notes.