Why do people buy the cognitos if the sleeves are half the price and do the same job?
Sleeve's- offer strength to the OEM rod only / to some guys not running large tires or lift this is enough.
Cognito HD tie rods- offer complete strength from end to end over OEM / at more of a cost you are complete in making sure you don't have a tie rod failure.
Neither one is right or wrong just up to you to spend your money on how much strength you want.