I am not a very good bowler but I am still in the learning process, I play 3 leagues a week and average 180-190.
My first ball for heavy oil conditions was a 16 pounder Apex Addiction, The first time I used it, it worked extremely well but the flare went away too fast (after 2-3 weeks). I had it sanded and the ball became very aggressive on heavy oil. Last year on advice of the most experienced bowlers I started turning my arsenal into 15lb and I was able to get a hold of a used 15lb Apex Addiction from a former PBA player, I had it sanded and it works like new. It is my first choice whenever I start a game, and I always have to switch ball on the second or third game because it eats all the oil in its path very fast, I think it is because of the Mac Daddy Particle Resin Coverstock. One thing I learned with the 15lb vs the 16lb is that I needed to increase speed and rev to hit the pocket, otherwise the ball breaks too fast. Retired but still a Great ball on heavy oil.