I am trying to round out my travel lens kit for the OMD. Let me first say that I recently sold my 45 1.8 to finance a diff. camera and even though I felt it was tack sharp, I'm not a fan of the focal length. My current lineup is the 14-42 II R that came with the kit and my trusty pany 14mm f/2.5. I am looking hard at the Sigma 30mm f/2.8 for a 2nd prime but was wondering if the $$ would be better spent on a Oly 40-150 for those times that I'd like to extend the camera's reach. What are your thoughts?