I have the 2021 T100s (not T100) 4-PW with Project LZ 6.0 shafts and like then a lot. I go thru irons quite often because it’s fun for me. Also have the 620 CBs. I found a set of used 620 MBs 5-9 iron for a really good price and thought I would try them. After 3 rounds I am very impressed. They are no harder to hit for me than T100s irons and they have better turf interaction for me. Worth a try for sure. They had X100 shafts.