This is Mizuno's first MP model with a full cavity. The cavity adds a much larger sweet spot than other MP models and a higher ball flight. This iron is more forgiving than other MP models and will appeal to a larger audience. The MP-57 glides through the turf easier than other MP models which always seemed to dig into the turf. HOwever, it still has the beautiful look of a Mizuno MP iron.
Although other MP models are more difficult to hit, when you hit them pure, no club offers a sweeter feel or sound. The MP-57 still feels and sounds good, but the off-center hits do not offer the feedback typical with cavity back club this feedback is produced by other models. Working the ball is more difficult with MP-57 compared to other MP models.
If you have been wanting to step up to "player's clubs", but are hesitant, this is a great model to play. The MP-57 looks and sets up beautifully and inspires confidence. Most appropriate for single digit handicappers.