i'm looking to replace the pups and eq on my ibanez bass. should i get bartolini or nordstrand pups? and for eq, bartolini, or splurge and get a john east u-retro preamp? or, would maybe going passive and getting a villex pickup set be a cool idea, with Volume-Blend-Tone-Tone-Mids? help me out pals. it's a P/J setup, btw.