http://nostatic.com/content/bnc-2012-photos
These were all shot with OMD. Outdoor are the 12-50 kit, indoor are either Panaleica 25/1.4 or Oly 45/1.8. I also have the 75/1.8.
75/1.8 is a ridiculous lens. Better than any glass I've had except may a Pentax 77/1.8 ltd. If you want/need 150mm equivalent there is no better lens imho no matter what brand.
45/1.8 is great as well, not as razor sharp but better than most. Works great in bad light as a portrait.
25/1.4 is the lens that is usually on the camera. Fast and sharp.
I haven't shot the smaller primes except for the older 17/2.8 on the EP1 body. That lens was so-so. The newer one is supposed to be a lot better.
I have owned/shot everything from p&s to full frame. Currently have a 6D when I need that but frankly I prefer the look of the OMD with good primes over anything else I've used. ymmv.