silly ARGH, sound and price aren't always linked
Used a rockbass streamer for a while, playability wasn't all there for my liking, but the sound was. Might want to wait a bit until the new range of rockbasses come out as this will either lower the price of the older one or you might find you prefer the newer one. Easiest way to tell the difference is to see whether it has a one piece bridge (Mark 1) or two piece (Mark 2)