I have bought two recently - first an old one with the 65mm lens, then one from the later batch with the 45 and 100mm. While the 100mm looks a bit big and the jury is still out on the usefulness in the field, the 45 and 65mm lenses are truly great. This camera is a great complement to a Pentax 645N or a Contax 645 for shooting with wider angles. The Pentax/Contax still have an edge for tele/macro or portraiture.
If I had to give a judgement on the camera- I would give it a 9 within the typical limitations of a rangefinder. The lenses are Zeiss level sharpness wise, but much less contrasty, so really great for B&W. The main drawbacks I see are: 1/500 min shutter speed ( but you can sync the flash all the way, if you want), and the fact, that there is no effective alert to when you get past the 16th frame. I have put the camera on a scale and compared to the weight of my Nikon F100 - Bronica is lighter.
BTW, I have watched recently on the tube, a documentary about Helmut Newton:
http://www.imdb.com/title/tt0097382/
You can see him shoot with a Hasselblad, Plaubel Makina and a Fuji 645. I know he also shot in his later years with Mamiya 67. If He had a chance to use Bronica RF in his day, I am sure he would have done so, as he liked the slightly wide/normal lenses and was not usually bothered with shallow dof - he probably shot at f 8.0 most of the time.
You can see a shot with the 65mm in my blog, under the "Christmas is coming" title.