I don't own the Dark Thunder pearl, however I do own the Dark Thunder and it is my favorite ball. I keep the coverstock at 600 grit and can use this ball on most medium to heavy conditions. I bought a Special Agent for Nationals earlier this year because I had read how that ball was really tearing it up on the slicker Reno condition. But, for me the Dark Thunder and my Shift both outperformed the Special. I would highly recommend the Thunder, for the price it can't be beat. However, for a pearl counterpart I would go wth the t-road pearl or Agent. I would like to also say that what works for me may not work for you, as I mentioned above, most people love the Special Agent including my wife and two of my teammates. So, it would probably be best to ask a trusted pro shop person who either knows your game or at least can watch you throw some.