The Olympus E-P1 was my first Micro 4/3 camera. I loved it, but it was S-L-O-W. And basically every Olympus PEN camera (E-PL1, E-P2, E-PL2) was slower than any Panasonic G-series camera. But the E-P3 is different. It focuses very fast, although a hair slower than the GH2. The touch AF/touch shutter also works great, much better than on the GH2. I suspect this is because Olympus uses a capacitive touch screen that is sensitive to touch instead of a resistive one that is sensitive to pressure. High ISO seems to be improved compared to the previous PENs. It retains better detail and color. And, of course, the feeling of the camera is very different to the GH2. It's not really smaller and lighter, but it feels great in my hands. Not to mention very classy retro look. Overall, a great camera. Clearly much better than I expected.