Die cast are heavier and can choke the drums resonance, but they hold the tune better and don't warp under pressure. Yamaha has aluminum die cast which are lighter and don't choke the drum as much. Triple flange have more breathing room, and offer more sustain. I like die cast for snares. I have a tama birch with die cast, and they sound "flat" but they're good live, mic'd coming through the PA. My DW kit has triple flange except the snare. The toms SING, have great sustain and tone. At the end of the day, it's not right or wrong but better for you might not be what's better for me.