Well, the only choice for you sepiareverb, and some others I'm sure, may be the G2, however, if I'm walking around with a 21 or 28 lens during the day at f8, I would probably zone focus the camera manually. Its much quicker...you won't miss that shot of that crazy guy in a bunny suit on a bicycle riding by you fast.
However if you love that shallow depth of field and always shoot at f2, well then you probably won't be zone focusing that often.
I don't understand how one could "mistakingly" bump and move the focus dial on the G1. Its locked. Its also in the same position as the shutter dial on the G2 (which is NOT locked unless on auto). So if your moving the focus dial by mistake on the G1, you'd definitley be moving the shutter dial by mistake on the G2. Either way, your screwed. I've never done that on either.
They are both, in my book, fantastic cameras. However the design on the G1 is smarter, lighter and more efficient than the G2.
It was redundant for Contax to separate the shutter dial and bracketing dial on the G2. Does anyone know why they did this? It just takes up space and creates the need of a third focusing wheel in an odd area.
If you want to switch from manual exposure to auto with, say +1 bracketing on the G2, you have to rotate the shutter dail to Auto, then rotate the bracketing dail to +1. Thats two steps. On the G1, its the same dial...which make more sense because all you have to do is rotate the shutter dial from where ever its set to +1. Thats one step. Much more efficient. Less distracting. More photography, less buttons.
Ultimately the choice between the two systems just depends on your shooting style and what your purpose is for having this camera. If its for travel and hanging out, documenting your life, etc I would go for the G1 because it is seriously lighter and smaller to a degree where it does make a difference (Leica M5 vs. Leica CL). If your going to be shooting events and jobs where you always have a big bag full of filters and all your lenses and weight and convenience doesn't really matter to you, then the G2 is fine.
Cheers
Michael
www.michaelbrandt.net