I’m late to the conversation, but I bought the guides for my rikon built craftsman bandsaw. I bought both guide sets but have only used the standard guides. It really changed my saw. It used to be really frustrating, but now it perfect every time. I also bought their fence, which I like a lot. I replaced a kreg fence, and have no regrets.
Fwiw, my bro-inlaw had the grizzly bearings but replaced them with carter. He was so frustrated with his old setup, he considered getting a new saw. He’s happy with the new guides.