I'm having quite a hard time trying to decide which lens to get. I already have the 45mm f1.8 lens to go with the E-M5. I'm looking for another lens to use on my trip to Hawaii this summer. I also have a few legacy lenses (45mm f2, 50mm f1.4, 58mm f1.4 and 135mm f2.8) that I plan on using but would prefer having AF especially during vacation =] I've been reading on the 12mm lens and looks to be a very great lens. The thing is, I don't usually shoot wide angle. When I had the D7000, I bought a Tokina 11-16 mm lens and thought it was fun but ended up selling it because I hardly used it and usually prefer the more standard range. The 12mm does look like one of those must have lenses for the m43 kit. I'm just afraid I won't use it much. Second choice would be the Panasonic 25mm f1.4 lens. I really like the 50mm focal length and fast aperture but not sure how it'll perform on the E-M5. I have read about the rattlesnake thing and not sure if it'll be noisy on the E-M5. I had the 20mm f1.7 on the E-P3 before and was annoyed by the aperture noise. Third is to get the Olympus 14-150mm zoom lens. Might be a good lens to use on my vacation. Since I'm not a zoom kind of guy, not sure how I'll feel having this lens. When I had the NEX-7 recently, I also got the Tamron 18-200mm lens with it and ended up returning it because it hardly gets used. Maybe it's because I always prefer to have a fast lens. I don't want to make the mistake of getting a lens that I won't use that much =/ What's your opinion?