I'm taking a trip to Europe in fall with a carry-on only and am looking for a versatile lens to put on my EM5 so I don't need to swap lenses. These are a couple of contenders I have found and my understanding of them, I would like to know if I got my details straight and which would you recommend? 1. Olympus M.Zuiko 14-150mm F4-5.6 (rev II) Currently my top contender, really like what I've heard about this lens in both size, weight and quality. 2. Tamron 14-150mm F3.5-5.8 Di III Seems a decent lens but with similar flaws to the previous generation of oly and pana lenses. 3. Panasonic Lumix GVario 14-140mm F3.5-5.6 ASPH Power IOS Heard good things about this one too, but since I have the EM5 I don't need the IOS and the higher price tag. This might get cheaper though as it's being sold with the G7 kit right now. 4. Panasonic Leica D Vario-Elmar 14-150mm F3.5-5.6 An older lens but very high quality. Heavy though and the zoom and focusing is slow. 5. Other option I don't know about?