Ive questioned this myself. Ive played hockey for 32 years, played Michigan high school and club hockey in college, beer leagues since. Never even knew what I was skating on until the last few years other than skate brand. Never messed with profiles, or even ROH. Actually never even paid much attention to stick flex, blade lie, etc, just worried about the curve pattern. Maybe knowing this stuff would have made me better, but i doubt it. The cream always seem to rise to the top regardless of any of this. Anyways, had a profile done a few years ago at Pure hockey. The guy’s profile of choice was 11’ pitched forward. I friggin loved it. However, after so many sharpenings that profile is gone anyways. For that reason I’ve switched to having my skates sharpened solely on a Sparx machine at a local rink. Recently got some Step Steel from Canada for my Bauer 1s and had a prosharp quad profile done out of curiosity. I seemed to have a lot of people tell me I was fast on them, didnt feel a ton different other than not feeling like I could stay really quick in my turns. I actually felt less stable than my previous single radius when doing say cross overs around the circles drill. This was all done after covid so I thought, “maybe I just suck from not skating in a while?” so I bought a second pair of Step Steel for a good deal on sideline swap for the LS1 Edge and had them profiled at 11’ forward pitch. Ive skated on those once and felt like I was really up on my toes. I havent been able to swap them out in the same skate yet but plan on doing that soon.