I have the Terminator, Big R Bang, Guaranteed, AP2 and purchased two Yeah Baby's. By far, the Yeah Baby is the hardest hitting ball I've ever thrown. I have over 35 (279's) in league play with them and I won't put it down. The shell is made of diamond particles, it doesn't overreact and hit's like a mac tank. It's suited for medium to heavy and if the lanes are wet, move right. I probably put 400 + games on my first one and you can barely tell by the coverstock. If your looking to use it on heavy oil, put the pin beneath the finger or maybe a stack leverage. I'm a stroker and I find, the pin beneath the finger is my best option.
I dropped weight to 15lbs, that's why I bought the next one. Trust me, you'll be happy with it!
Best of luck!