Agree as well but it feel softer than Dg and the distance is greater than NS.Pro I have try both K's 3001 R and S felx but I prefer S flex better . For me R flex give more kick +distance than NS Pro 950 R but on long iron difficult to control and ball flight is not as penetrating but S flex is better than NSPro 950 R but less stiff than NS pro S
That is my thought