For a new bass, see if you can get an deal (or stretch the budget) to an Ibanez SR505. A brilliant bass for the money and feels like a light Warwick. They have very decent electronics, too. The string spacing is narrower, but they are easy to play. ([url="http://www.guitarampkeyboard.com/en/ibanez-sr-505/11055"]http://www.guitarampkeyboard.com/en/ibanez-sr-505/11055[/url])
For a second-hand (and well under budget) option, as an alternative to getting a Rockbass Streamer Standard, you might want to keep an eye out for an old Warwick Streamer STD. They were German made and had standard Warwick necks on cheaper bodies. They only made them for about two years (1999-2000). The passive electronics are very basic, but easy to upgrade. ([url="http://www.warwickbass.com/basses/streamer_std.html"]http://www.warwickbass.com/basses/streamer_std.html[/url] - this web page is old, by the way, these are definitely no longer being made).