I'm now in possession of the B10 mentioned earlier (the one with the fretlines and side dots between the frets). I've got to say that so far I'm loving it although I'm still trying to figure out the preamp. I've fitted a strap pin on the heel and I'm playing it horizontally.
The thing I'd change is that I'd prefer if it still had no fretlines, although that's not really a problem, but, more problematically for me, I really don't like the side dots between the fretlines as if it was a defretted bass. I may have to have those dots removed and new dots at 1, 3, 5, 7, 9 etc.