Not sure if anyone has done a direct comparison between the 2, I did a quick search and didn't find anything. So here's my brief comparison of the 2 "pocketable" m4/3s. AF Focus Speed: Tie. Both are fast, the E-PM1 may be a hair faster but it's hardly noticeable. Body Design: GF3 wins. Both feel solid and designs are slick (although the GF3 is a bit more curvy, perhaps to appeal to the female population) but the GF3 has a hand grip which is a big plus. You can buy an add-on grip for the E-PM1 but then you can no longer buy a form-fitting case for it. The E-PM1 does have a hot shoe but is it really necessary? I wouldn't really use a EVF on it since it will serve as a grab & go camera, the only other practical use is the flash but I prefer the GF3 with the flash incorporated into the body. Don't get me wrong, a hot shoe is a very nice feature but not at the expense of eliminating the in-body flash as in the case of the E-PM1. Operation & Control: GF3 wins. Both are simple to use with easy to find controls and a dedicated video button. But I like really the touch screen feature on the GF3. Although it's not a captive touch-screen like your smartphone, it still works pretty well. I love being able to focus and shot by touching the object on the screen, a great feature in my opinion. Art/Custom Filters: E-PM1 wins. The E-PM1 has much better filters, I love the pin-hole, soft-focus and grainy film. The GF3 has custom filters too but it's nothing special. Conclusion: I sold the E-PM1 and kept the GF3. In the end, the in-body flash and touch screen focus and shoot feature won me over. I do need to point out 2 features that the E-PM1 has an advantage over the GF3, the stereo mic and IBIS. Although it would be great if the GF3 had a IBIS, I don't think I will miss it all that much since I will primary be using pancake prime lenses on the GF3. Lastly, I would like to point out that the prices for the E-PM1 has been dropping. I wonder if it's a case of people preferring the E-PL3 or GF3. Maybe it's because of all the negative news coming from the Olympus camp. In any case, I feel both the E-PM1 & the GF3 are a perfect choice for anyone wanting a backup pocketable m4/3.