Here you can listen the soundsamples of the pickups for squareneck resonator guitar.
You can judge their sound quality for yourself:
(The soundsamples are without any sound effects or preamps like for example Fishman AURA etc…)
AMISTAR pickup (piezo-electric, installed on the spider):
SCHERTLER pickup (electrostatic, installed on the spider):
McIntyre Acoustic Feather pickup (piezo-electric, installed on the resonator cone):
Fishman Undersaddle pickup (piezo-electric, installed under the saddle):
I also attach the sound of resophonic guitar on one microphone RODE NT1-A: