theres plenty surface mount chokes.because the device i'm making is really small. 40 x 25 x 6mm. a pz requires a choke to drive it, and i can't find a choke that is small enough to fit. it would have to have D <= 6mm.
Also you get increases by
a) proper acoustic mounting
b) parallel resistor (its a capacitor effectively and needs discharge)
c) AC waveform driving