Panasonic G1 vs Olympus E-P1, and Manual Focusing with the Micro 4/3 System – Anzere08:
I think I prefer the G1 to the EP-1. I have both right now. Viewfinder, AF speed, and swivel screen makes the G1 a fun photo tool.
Micro 4/3 made me use also manual focusing a lot more, it's very easy with the magnification screen.