Hi there. I have a mim pbass with stock pickups and a bartonini premamp with a passive active push/pull switch. I am pretty happy with how it sounds now in passive mode and ok with the active mode. I am basically trying to make it 2 basses in one. I want to maintain the passive p tone and I want a really bright snappy active tone when in active. It does that ok right now in active but I want even a little bit more. I know that upgrading the pups in the mim pbass is pretty common. What would you suggest to try to get the versatile sounds i'm going for? Thanks.