I had a Legend 5 and a Euro 4.
The Euro and US series are the real deal, the others, not so much.
LOVED the tone of the Euro, HATED the ergos. The short upper horn and bridge placement made it an incredibly uncomfortable bass for me.
If you really want a Spector, save for a US or Euro, used, don't waste your time on anything less. IME, you'll not get the Spector sound, just the crappy ergos. At that point, just get an Ibanez SR with the reverse PJ setup and put some EMG's in it. Same tone, way better ergos and less money.