In my country of residence the EZ is the only lens sold as a kit with the em10. Even if I had a choice, I would have selected the EZ. For little weight, it will fill the gap in my travel oriented lineup: O9-18, O45, P45-150. In one month of use and testing the EZ has performed as expected. With no or slight crops, exposed to the right in good light at ISO 1600 or less, scaled to monitor size and viewed on a monitor at arms lenght, it delivers good enough quality*. Only images I've been disapointed with were ISO 1600, 42mm, wide open f stop, indoors, exposed to the left to keep from blowing out highlights and cropped to 1/4 of the original size. Too splotchy to be usable without detail killing PP. Don't know how much the sensor contributed to those splotches.Is it worth extra money?