4 or 5-string?
you can't really go wrong with the yamaha bb series... but you might like the ibanez srx series too. not sure how much those are though, but there's one in the classifieds for 600.
you could wait around for a jazz bass to pop up.. fernandes, tokai/greco are pretty good basses for the money.
one thing though.. i think most of sakurai's tone comes from his amp, or at the very least his bass preamp. that's something you're not likely to get at your current price range, but any of the above suggestions will put you somewhere in the region of what he sounds like as long as you eq yourself properly, especially the jazzes.
as always- try before you buy, or at least know what you're buying