Triple-flanged hoops are the hoops that you’ll find on most drum kits. They’re the standard type of hoop to use. Die-cast hoops are seen as luxury hoops. They’re a lot heavier, bringing out a brighter sound from the drums. You’ll find die-cast hoops on most of the flagship kits from all the major drum brands. While they’re a higher-quality option, they’re not always practical. I have two main drum sets that I use that have both types of hoops. I often find myself using the one with triple-flanged hoops for gigs as it’s lighter and easier to move around.