I have determined: I love the size. I hardly use my 12mm or 45mm OLY lenses; the kit 14-42 is the lens that is most useful among those three for me; I reordered a 14-150 ( I had ordered and cancelled it a while back) My (now gone) D7000 handled action photos orders of magnitude better but in stills the Oly is the equal in both focus speed and image quality (if you are not cropping to insane levels). THe add-on VF works fine (VF3) but makes the camera kind of a pain re awkwardness. The OMD might be better re that but the lack of a built-in flash is a big negative for me. I use fill flash a lot and have always found it to be one of the best ways to get a good shot of people in bright sun. I have to admit that the Nikon does it better than the OLY but Nikon flash has always been the head of the class, IMO. My experience has been that the 12mm and the 45mm are absolutely superb lenses but the convenience of the kit zoom has trumped them. I find that I prefer the zoom - just as I did with the Nikons. I had a few Nikon primes but the Nikon 18-200 became my primary lens when I bought it and I realize that I would rather have a zoom like that on the camera than fool around with changing lenses. Yeah - we all did that lens-changing thing back in the old days but since the only way I look at pics nowadays is on a computer/TV screen, the difference in the Oly primes and the kit 14-42 resolution-wise is not visible with the same photo at the same image size. So the 14-150 will essentially replace the Nikon 18-200 that I used to use with my D80, D90, and D7000. Not arguing or suggesting anything, just giving my opinion of MFT as I have used it.