I read a lot posts about dual angle layouts and how a ball gets drilled but I don't read much about cover. From my experience and what I have read, layouts have very minimal affect on the ball compared to what surface/strength of cover you have on the ball plus what oil pattern you are bowling on... I have 4 drilling patterns I use and I honestly can't see much of a difference between each one but when I change the surface, Its like a whole new ball.
So Here's my question. When buying a ball, are you more worried about layout or what surface. Also, do you consider the cover or core shape/numbers more important? I'm asking just so I can get a better understanding of how you guys set your arsenal for not only league play but tournaments as well....