SD,I agree that not only KH but I believe you can catergorize them along with many other brands sounding much the same!# of reeds and thickness of those reeds is whats going to change the tone for the most part!I can take a simple clear toned double reed and change pitch with it by adding tongue pressure!You can very the tone this way with most diaphragms but holding that particular pitch can be difficult with many!For me personally I like a call I can high ball those long distant or redhot gobblers with to than being able to seductively persuade him to come give me a close visit with some sweet soft stuff!!!