I just recently bought a E-PM1 for travelling and am very impressed with the 4/3 camera system. I bought a Panasonic 20mm 1.7 to go along with it and currently experimenting and very happy with results. Love the portability of the camera and find I'm shooting much more - I recently put up some photos and never go so many compliments before - because the more you shoot the higher chance of great shots. I currently own a Nikon D90 with a Tamron 17-55mm 2.8 and a Nikon 50mm 1.8. The problem I found is carting all the gear was so much hassle and I never felt comfortable sticking a big camera in peoples faces whereas the E-PM1 is so discreet and I can take it anywhere. I wasn't shooting much on the D90. The problem I have now is deciding whether to keep my E-PM1 or upgrade to something more powerful and easier to handle and replace my D90 altogether. I like the look of the X Pro and E-M5 but also consdiering the E-P3. I definitely want an EVF, BH have a good deal on E-P3 with 12mm lens and EVF but then I'm wondering whether to wait since the technology is rapidly growing. Canon and Nikon haven't really given it a good shot yet. Exciting times.