I have an Rondo Agile SX 5-string Jazz bass that I'd like to improve, but please realize we're talking about an instrument that cost me $90, so spending $100-200 on pickups isn't something I'd be too keen on. I was thinking of Seymour Duncan SJ5 67/70 pickups but they're too expensive at $130 for the set. The type of music I plan on playing is classic rock, but mostly Blues, with some old Motown-type stuff. The amp I will be using is a Bassman TV 15. I appreciate any and all recommendations.