Went with the JRZ steel due to lower price. Very happy with my choice. Changed from the SB Black steel. Tyler suggested the the Tydan power cut profile, similar to my current. But the big change for me was the sharpening @ 11/16. Took a couple hours on the ice to get comfortable , but now I’ve got fantastic glide with maintained strong edge work still. I may try a 3/4 sharpening in the near future.Also when the ice gets chewed up I still have good glide and find my legs not as tired. Less work /force required.