There can be a preferred crank depending on the water temp.Seams the P10 are what catches best at the coldest water temps due to their more subtle action.The bandits have become very popular in the past 5? years since they require little tuning and catch well in very cold to warmer temps.The reefrunners,which were the dominant crank for a long time dive deeper and have a more aggressive action.They seam to work better in warmer water but are more difficult to tune.The dhj still catch fish.Maybe not right after ice out,but soon after.Never know what action the fish will want,so put out several types and see what the fish want.Remember,when trolling,put the longest leads on the outside and the heaviest weights on the inside.