Just picked up a new Fender Affinity 5-string Jazz bass for $159 (Yeah!) for potential worship team use. The roundwound strings that came on it from Fender are just TERRIBLE and will be replaced ASAP with Fender 9050-5M flatwounds. Next likely step will be to upgrade the pickups. Anyone know if the stock Fender Affinity 5-string pups are the same pups as the MIM 5-string Jazz pups? Are "Guitar Jones" pups any good? Any suggestions on good or "best" pups to upgrade this bass? General thoughts?