As the title states, I know almost nothing about pickups. I have some questions: 1) What is a J/P style pickup? I see people always talking about the difference. 2) What is the difference between the bridge and neck pickup? I've noticed the bridge is almost "lighter". Is this true? 3) I'd like to knwo some good quality pickups. Are humbuckers and Bortolini good? How about others? Thank you!