The Delta 10 sounds very nice too, and it isn't expensive. The horn decreases distortion by reducing drive requirements, so even lesser drivers sound very nice and clean. If you're using the horn for midrange only, go with the Delta 10 instead of the Alpha 10. The Alpha is better when you're going to use a bass-reflex rear chamber for bass in addition to midrange output from the midhorn. But when used as a midhorn only, the Delta 10 is better.