It all depends on location and time of year. Using a bait that the fluke are keyed into is the best bait. Whole squid early in the season, snapper blues when they are abundant, sand eels, tinkers, etc. They all have their time and place. My personal experience has been that silver bullets are deadly early in the season and almost worthless at the end. I have no "favorite" bait.
Gamakatsu