Ok, here’s a limited review/comparison of the KE4 Max vs my KE4 Tour+.
This was on an inside sim, with no warm up, only hitting a dozen total
First off - these clubs have diff specs. The KE4 Max is 34, shafted with a Nippon Pro Modus stiff, 36.5”; the Tour+ Is 37, With a Pro 950GH Reg, 37”. FWIW, I play 1/2” over but can play standard, and I play regular flex but can play stiff.
Bottom line - they felt very similar, almost indelicate. I bet any diff would be due to shaft. Both had a solid feel. I was swinging easy as I was inside and didn’t have any noticeable mishits (heel/toe) any, so I cant comment on forgiveness. And as I was inside I cant say anything about the sole /turf interaction, but the Max sole is a tad wider and more rounded/I bet more bounce.
Here are the numbers (don’t laugh - I am old)
KE4 Max: carry 132-135 yds, Launch 20-24, spin 6500
KE4 Tour +: carry 128-130, Launch 22-26, spin 7000
To me it seems like the Max is a more forgiving version of the Tour+, a tad more rounded and by looks more forgiving and cleaner cavity. When the time comes they will be my new iron