i have not thrown a dv8 so this is just off of watching a couple of friends of mine who bowl alot like me. i did see a little over under. however, i have found that you need to match up to a ball. I like throwing roto grip, but not so much storm. i only use two main balls right now a defiant soul, and a dark star. I tried a brunswick ball, the c system ball that is all black, don't remember. My pro shop guy, who i totally trust, told me not to buy the ball because it would not match up, but i thought i knew better and bought and drilled it. i threw 40 or so games and just did not get any carry, or any good consistant roll with it. is it the ball's fault? don't think so, as my pro said, i just did not match up to what the ball does well. i gave it to a kid in the jr's program who loves it.
i don't like that people bash a ball. figure out what works for you and what doesn't and stick with it. just my two cents