Can anyone recommend a nice-sounding pickup that's also feedback resistant? I sometimes end up playing fiddle and sound engineering from stage for one of my bands and I have to walk out in front of the speakers to check the balance during soundcheck - what pickups are there that can cope with that sort of thing without feeding back (and also work wireless)? I've been using a Fishman transducer but I've had it a while and it's a bit knackered now. I'd like my next pickup to be more natural sounding, but would also be handy to be able to use it for sound engineering gigs.