Thanks for the feedback so far...
In terms of choosing 28 favourite 35mm cameras I tried to choose a reasonable cross section of my favourites, so I have compacts, rangefinders, SLRs, a couple of digitals etc. Then it was in part which worked best with a 28mm lens, or which came with one etc. And occasionally it caused me to buy a new camera or lens....
One such being the Ricoh GR which is indeed featured ion the project, and was one of my favourites....
My own favourite focal length are, if 2 lenses, a 28 (or maybe a 25 or 25 in some lenses) and a 50, or if one lens a 35. So I have always liked 28, especially for street photography and architecture.
My next project after 28 is 35 which is, as you can guess, 35 favourite cameras with 35 x 35mm lenses. I have nearly finished all the shooting (I think I am on about 30 by now), but am a long way behind on scanning and editing. I had planned then to do a 50 project, but I think I shall put that off as something to look forward to doing in about 5 years time when I need an excuse to run through my entire camera collection again!
Nick