I have to say that Stephen and Harry's instruments are exceptionally fine. I think the fretless neck on Harry's might be the most perfect sounding fretless I've ever played. The filters really bring out all the great tonal possibilities. The 6 string neck is interesting. Very cool tones, but if I were to design such a bass, I'd put it on the bottom. And maybe radius the fingerboard a bit. It's kind of wide, so chording is troublesome.
Chording on Stephen's 5 string, on the other hand, is a breeze. It plays so nicely and the tone is spectacular. Very rich and crisp. I'm guessing this sounds ferocious through a big PA.
Thanks for posting the pictures! The next time the Starfire makes an appearance, I'm hoping I'll have the master volume done and the hum canceler up front where it belongs.