Deciding on the "correct" shaker is a personal matter, and you may become proficient with any type you choose. If your main concern is clean ease of use, a three-piece shaker may suit you. For working mixers who might be looking for rapid application, a 2-piece system of capping a smaller tin or mixing glass is common, as is simply using a single tin for stirring and a wire strainer to separate the ice. 2-piece shakers are often sold as a set, and so often look is equally important. If you want a little flair and ease of grip, you may want to check out a vinyl-coated shaker. Picking metal or plastic is something to consider when budgets and show of both pros and home bar enthusiasts are key.