[mst]

Nikon does not have the best reputation in the compact camera segment (to put it mildly). If a compact camera is what you're after, you're probably better off with a G12 than with a P7000. Even the NEF argument is not really valid, since the file format varies with every camera. So, you'd have to check whether your RAW converter supports the P7000 (or any other compact camera that produces RAW files).



Don't expect too much from the optical viewfinders in these cameras. They're small and dark and only give a very rough estimate of the frame coverage.



In addition, these cameras aren't really small (compared to the rest of the segment). If size matters, I'd rather choose a LX-5 or a S95 (which is already too small for my taste).



However, for the intended usage you'll probably prefer a more "capable" camera. Especially if you plan to use the limited DOF potential of fast glass. The obvious candidates here are the GF-1 (with 20/1.7) or the Sony NEX. If you don't mind a fixed focal length, the Fuji X100 is certainly an attractive option, too.



There's one camera not mentioned, yet, that is also the closest match to a M9: a used M8. Gives you the largest sensor, however make sure to get familiar with the Pros and Cons of a rangefinder in general as well as the issues specific to the M8 before you choose that route.



-- Markus