Just picked up an E-M5 last week on an amazing web deal and so far I absolutely love it. I also own a GF1, GH2, Sony Nex-5n, and Nikon D600. After a few days with the OMD I've already decided to sell the GH2, Nex-5N and a bunch of lenses. So, I'm ready to make a lens purchase this week in prep for upcoming holiday events and trips. My dilemma is deciding on the new Olympus 12-40mm f/2.8 vs adding a couple more primes to my inventory, like the 12mm f/2, 17mm f/1.8, and 45mm f/1.8. My current arsenal is: P20 1.7, P25 1.4, and a few manual lenses: Sigma A 35mm 1.4, Nikkor 50mm 1.8, Zeiss 85mm 1.4 I am a huge fan of the 35mm angle, so am interested in the 17mm. A lot of my photography is landscape, so want at least a 12mm. Weight is a bit of concern as I'm usually on photog/cycling trips. I know opinions will vary, but will definitely help with my decision. Thanks!