I had a Gen 1 Bullseye (long distance version with booster, was supposed to be easy 1000yds, only got 700 most days) and switched to new Target Vision system. Target Vision is a much more user friendly product. Never had it NOT work, but have only tested it to 1200yds and it was flawless. Set near target, turn on, hook up via app, line up target to camera, then go back to bench, turn on receiver, verify hookup, and start shooting.