Like "See, I would choose the meter in the middle. It does no good to have one that shows low or high if you have that choice. It could tell you that you are having a low, when maybe you are not. That could lead to an over treatment of a lwo that doesn't exist. However, if you did the test a few more times, you might find that the meters change places as to what they read. Use the one you can afford to use the most and use it often."