I was comparing these discs on the shelf and was trying to decide which to get. They have the same stats 13/6/-2/2. The biggest difference was the shape of the rim. I power grip the rim like a pencil for throwing front hand. The writing bump on my finger actually fits nicely on the Groove's curve. Looking online, people seem to not like the Groove calling it gimmicky and the Shryke is more praised and popular. I wish I could try them both, but I can't really invest in more than 1 disc. Thanks for your help deciding!