I have an athletic swing, but have always struggled with launching my irons too high. I've recently been focusing on face control but have found it hard to figure out if my wrists have the correct flexion at impact.
I picked up the Hanger, attached it to a club, took a few swings at home, got the feel of keeping it pressed into my left wrist through impact. It felt fairly natural, and I honestly wasn't sure if it was something I wasn't already doing in my swing. Flash forward to the range: it was not something I was already doing in my swing. I took a few knock-down swings with the Hanger and immediately started striking the ball beautifully with lower, driven ball flights. I moved on to full swings, and I've never had a range session with more consistent compression, penetrating ball flights, and satisfying "clicks" at impact.
Value is well worth it to me; I'd gladly pay < $100 for anything that leads to such easy improvement and gives such good feedback.