I never threw a Heist but I would have to think that the Lunatic would be close. Maybe a bit stronger. The Lunatic is a great ball to play straighter on fresher patterns and allows me to move in as the night progresses without sacrificing carry. However, I would not call it a light oil piece. It is way to strong on light oil for me.
For instance, last Friday in our league they must have forgot to oil our lanes or something cause they were pretty dry from the get go. I started with my Lunatic around 18 at the arrows and had a pretty good look, but when they transitioned it was done I couldn't get it down the lane. Just to give you an idea how dry they got I was playing around 14 at the arrows to about 8 with my White Dot at the end of the night slowing my ball speed down a little to get carry (with most of the hook being in the midlane).
