I'm planning to order a bass with double P pickups. I can configure it either wan a pan knob or a 4-way switch (bridge only - b&n parallel - neck only - b&n series). The 4-way switch would give me some good options, but the pan knob would allow me to blend the two pickups 80/20 or something like that. The switch would automatically be 50/50 with both bridge and neck in parallel. Which is the better option? The switch allows me to configure them as parallel or series, but the knob allows me to blend the two pickups any way I want.