I have a problem that's nice to have. My pre-loved MMF-3 turned up today and to my delight it operates as described. My problem is that now I need to choose between my 14-54mm or 12-60mm as my standard zoom lens for my E-M1. The 12-50mm is small and light, but too slow, especially at the long end. I was planning to move the 12-60mm along with my E-3 and E-520 to help fund the E-M1. Trouble is, it's wider, longer and focusses faster so would seem the better option. But, it's heavier, larger and marginally slower at comparable focal lengths than the 14-54. It's also likely that I would get a little more for the 12-60 to help cover the cost of the E-M1. I think I will probably keep the 12-60 at this stage. What would you do?