I have ordered Sadowsky single coils and Nordstrand NJ5 sets to try out in my NYC vintage 5 (currently with humcancelling pickups). I want to try each one out at home and also at a rehearsal/gig or two. I want it to sound good, without crackling, but I also want to be able to quickly swap back and forth for comparison. What is the best way to do this? Do I absolutely have to unsolder/solder each time I switch? I can solder but I'm no expert...