I may have a chance to get a Oly 14-150mm for my Panasonic G2. I currently have the pana 45-200mm with IS, kit 14-42, and the 20mm. Will the OLy 14-150mm be better than my pana 45_200mm? Was thinking about selling that one or the kit lens if the Oly is a better lens. Also would the Oly work fine with my Panasonic G2?