According to Bowlers Journal International (BJI), the Radical Guru and Guru Master respectively have the highest hook potentials of any balls on the market. I'm a ball whore, and I've generally found BJI's reviews and ratings to be solid.
I have the Guru, and was very happy with how it handled 52' Badger. On the other hand, I haven't successfully used it on most other patterns. True heavy oilers need heavy oil, or they burn up and generally get squirrelly.
Most companies offer balls that can handle the heavy stuff. No matter which one you choose, you have square up and play tighter. Nothing is going to go coast-to-coast on fresh flatter patterns.