I would shoot the factory string and upgrade only when you need to. Bear factory strings have been hit or miss for me in the past, But because I am cheap, I only spend money when I have to. The last Bear bow that I bought and recently sold was a super grizzly, that string was ok. I shot the beans out of it and it went with the bow and is still going strong. When you buy a new car or truck do you immediately swap out the tires ? I sure dont.
You might have guessed but I have a hate relationship with D97. I spent to many hours putzing with my SK and TD because I couldn’t get them quiet enough for hunting. Only after I put an old B-50 string on the TD did it be quiet. I had a a string made with another FF material and I was good to go.