I own stiff 4-GW and love them. Sound is more pure than the Ping GMax which is same category. I hit them straight and have gained probably 15yds per club off my ole 90s set of irons.
I am 65 and play a couple of times a week. I’ve played several different brands of irons during the last 6 years and liked them all but concluded the 2014 JPX EZ with graphite shaft to be the best performing for my swing (70-75 mph for irons and around 90 for driver). I’ve found them to be the longest and most forgiving iron for me. I liked the new look of the 2016 JPX EZ better than my current ones and tested them as soon as they became available. I ordered a custom set from Global Golf and was very pleased with how easy the process was. I particularly like the many options Mizuno offers without an upcharge. I received my irons directly from Mizuno within 10 days. I’ve played 2 rounds with my new irons and their performance has exceeded my expectations. I conservatively estimate I am ¾ to 1 club length longer with equal to or greater forgiveness compared to my previous irons. I ordered the new irons with the same custom specifications as my previous irons with the exception that I changed from a SR (stiff regular) graphite shaft to a Regular one. I was previously fit with the SR because of a fast transition from the top but have been working to try to put more speed into my swing closer to the impact zone. I don’t know if it is the more flexible shaft, the redesigned club head, or a combination of both; but, there is a very noticeable softer and hotter feel to the ball coming off of the club head face. Looking down at address I really like the Black Ni Finish and that the head does not look as “chunky” to me as the old JPX EZ did. If you are looking for a game improvement type iron, I highly recommend you give this one a try.
The Mizuno JPX-EZ iron is packed with distance and forgiveness. The Hot Metal design features a dual pocket cavity and a multi-thickness face that provides fast ball speeds delivering some of the longest iron shots you’ll hit. The Power Frame design provides the stability for the pocket cavity while also providing extreme forgiveness for shots stuck anywhere on the face. The Mizuno JPX-EX iron also has an anti-glare black nickel finish that’s easy on the eyes.
The Mizuno JPX-EZ irons are available in four through pitching wedge, GW, and SW. There are numerous custom shafts to choose from, but the JPX-EZ irons will have the True Temper XP95 as the stock steel shaft and the Orochi as the stock graphite shaft.