My apologies for a slightly long-winded post/question. I am considering buying one or the other of these cameras, and would appreciate comments and suggestions. I have been shooting film for years, Leica and some Hasselblad recently, and have had a couple of little digital point and shoots; currently a Canon SD700IS. Thanks to the small size of the Canon, I tend to take it with me all the time, and thus get pictures that I wouldn't otherwise. Because it is digital, I probably also take (and delete) more pictures than I would with a film camera. Some recent shots, mostly with the Canon, are here: http://homepage.mac.com/macdonar/2009SpringLambs/, as some idea of the kind of pictures that I take. The pictures from the little digital can be remarkably good, but I find the lack of control in its use quite frustrating, and in low light the quality is disappointing, although, to be honest, probably not much, if any, worse than film would be in the same conditions. So I think that it is time that I moved up to a larger sensor and got a more 'serious' digital camera. It is intended to replace the little Canon, not be the ultimate when it comes to image quality - arguably I would be looking at a Nikon D700 or a Sony A900 for that, but not just yet.
I looked at both of these at my local camera store, and talked to one of the staff, whose opinions I value, about them. His preference was for the G1, because he finds that it focuses faster, because the lenses are smaller, and would expect that lenses designed for micro 4/3 will be smaller, and the camera is smaller. He wasn't impressed with the G1 when he first heard about, but is now enthusiastic about it. He isn't a big fan for the Olympus line, and seemed particularly unimpressed with their menu system.
For me, the G1 is smaller and lighter - closer to the little Canon - the viewfinder, in the store lighting, seemed brighter, the option to use other lenses, probably Leica or Zeiss M-mount, is either appealing or an expensive temptation that I should resist. The E620 felt more solid, but is bigger, the viewfinder seemed dimmer, but I very much like the idea of shake reduction in the body. I would probably get a kit (zoom) lens to start; on the E620 the pancake 25 and the 50 macro sound like a nice pair of primes. I know that they can also be used on the G1, but not so optimal.
I would like to hear your experiences, opinions and comments, pro and con, about these two cameras, especially from people, like Brian, who use or have used both of them. I am also interested in suggestions about lens choices, and raw developing choices. This will be the first camera that I will have had that can shoot raw: I have PhotoShop CS3, and perhaps I should just start with it and get used to raw processing, but I expect that sooner or later I will want to experiment with programs like Raw Developer and/or Aperture.
Thanks, in advance, for all your help.