What pop out?
Alright, M8/M8.2 is pricey, have a 1.3x crop factor, rangefinger, nice body
G1 is affordable, x2 crop factor with Leica M lens with adapter, I personally don't like the faux-dSLR body, digital-zoom focusing VERY useful, live view and movie recording (GH-1) also nice
R-D1 is a cheapened out M8, 1.5x crop factor, rangefinder, so-so body, has some analogue stuff like film advance lever and all those information on the top, makes you feel old school
All of them deliver great pictures. Do take note of the crop factor.