The areas where casting reels shine are vertical jigging and fishing in heavy cover. You have total control of the drop when jigging, and if a fish hits on the drop, you only have to thumb the spool to get an instant hookset - something not possible with a spinning reel. And in heavy cover, such as pitching a heavy jig, a casting reel is more like a winch when it comes to horsing a fish out of the cover. Also...some casting reels have a faster retrieve than spinning reels. So if you are burning a buzzbait or crankbait, it takes less effort and fewer handle turns.
Lastly, there is almost no line twist with a casting reel, even if you manage to reel against the drag.
