I have been throwing the Heat for the last 3 weeks and really like this ball. I had it drilled pin down and it gives me a strong continuous move of the friction (not a hockey stick but strong arc). I have have thrown this in two houses in the different leagues that I bowl in and have scored very well shooting 724, 758 and 692 the three times that I have thrown it for complete series. The ball is rated for medium to light oil but for me it will work on medium to medium heavy conditions. Compared to my LX05 i would say that the Heat is 4-5 boards stronger than my pin down LX05.
Mark