I play ProV1s. I like them. I've tried the Xs a few times. I think I'd like those just about the same. My buddy says he prefers the Xs because he feels the 1s are a bit too soft coming off the clubface. He has a point I suppose, but I don't have as much playing experience with the Xs as he does. The 1s serve me just fine. I give the 1s a 5.