Just started playing with single bevels this year and I went with Strickland Helix single bevels. They fly really well. Don’t have any experience with the Grizzly.
I shoot the 200grain single bevel Samurai heads from Grizzlystik I cannot say anything bad for them other than learning the art of sharpening is crucial of course LOL but it's becoming a joy to return an edge on a head. Incredibly tough and will split bone if you have an "adult" arrow build to use a ranch fairy term.
This is my first venture into the single bevel world, I was originally going with the Magnus stinger buzzcut but they aren't in stock anywhere.
Dr. Ashby and Troy Fowler, AKA the ranch fairy, are the reason why I'm trying these new things. I'm not going all out with the arrow weight though. Moving up slowly
Be careful, going to much front weight can really screw up flight if your arrow isn't heavy and spined appropriately. Just a word of caution.