From a Spector perspective the first 'decent' bass I owned was the original Spector Legend (before the range split into two versions). It was a cracking bass and you can find them lurking about for £300 or so.
Probably the best in terms of value for money that I have owned was an NS-94. Virtually a US quality bass made during the SSD period when he was in litigation about who owned what. Not up for sale often but worth waiting for imho, ymmv etc.