The primos palate plate make a difference to me, much easier use than a flat diaphragm. A diaphragm's ranges, variations and nuances is invaluable. I do have different blow calls, even a hochie, to add in the mix. But the diaphragm is 80% of my calling.

The sonic dome is too one dimensional.

You never know which call or note a specific bull will key on... but the more you sound like a herd and not blowing the same tune, the more bulls you'll call in.

Kent