I currently have a MIM Jazz with a BADASS Bass II Bridge and I need to get active electronics in this thing. I've heard that a J-Retro preamp is good. Can someone elaborate on this? BTW, What I'm looking for is a punchy tone with a lot of bass in the punch. Basically I want the growl of a MM Stingray pickup. Any info on this would be MOST helpful. My planned budget for this project is $200-300, but I can always spend more if convinced.