Mizuno MP 58 Irons feels very powerful
The key to this decision is weight. Titanium is 40% lighter than steel yet it retains the density required for a solid strike. This removal of mass allows weight to be spread across the clubhead, widening the sweetspot, but without moving the CG (centre of gravity) too far away from the clubhead, thus ensuring a lower flight and plenty of workability. At impact, the feel is incredibly solid, markedly different from the MP-68, which is much softer and more buttery. Despite what Mizuno says about a penetrating flight, I found the trajectory higher than the MP-68, but given that it is designed to offer a little bit of help, that is surely no bad thing - particularly if the towering iron shot is just your thing.