The Mizuno MP-69 irons on sale's appear to be a little larger than the older MP-32's and a touch more forgiving probably due to the 4D design. The Mizuno MP-58 Irons on sale play as good as they look. Coming from the 32's, they have the extra forgiveness I was looking for, without sacrificing the sweet feel of Mizuno's grain-flow forged irons. The Mizuno MP-57 Irons on sale are awesome. Along with increased forgiveness, the Mizuno MP-57s with Cut Muscle Technology will deliver the unsurpassed feel and precision.