I had a Cannon G9 and wanted to replace it due to the lack of true low light capabilities and it's small processor. I looked to replace it with a DSLR but found the size to be to large to carry with all my audio gear. I wanted the better chip in a small package, I found and looked at many of the 4/3 rds cameras (Olympus PL2/PL1, Panasonic, Sony).
I ended up purchasing the Sony NEX-5, amazing low light capabilities, can use different lenses, 1080i video, a point and shoot or manual overrides, small package. I am very happy with my choice, it delvers the quality I sought, compares well with my friends T2i, great depth of field and details. The downside I have encountered is size, an inch deeper than my G9 with the 18-55 lens, LCD is a finger print magnet, not many lenses available now but I can use my older Minolta lenses.
Tim