I'm loking to upgrade the hardware in my Fender Jazz. First I'm wanting to replace the pickups. I'm looking at the Noiseless N3 Single-Coil Jazz Bass. I need to replace the current pots as they cut in and out of volume when I use them. My question is, is there anything I need to look out for when choosing pots? I can see there is the 500k and the 250k but I have no idea what difference that actually offers me? I was wondering if someone could shed some light on what differences each offer? and which one is better suited to basses?