Just returned from an overseas trip where I had to take a small, light kit. Panasonic GX7 with the 100-300 lens on it, Panasonic GM1 with the 12-32 lens on it. The Olympus 45mm 1.8 for a fast prime option in between. A few observations: There was a gap in my kit between 32 and 100, and in the course of 2500 pics over two weeks, I never once missed having a zoom in that focal length. I took a ton of images at 12mm, 32mm, 100mm, and 300mm, and that was all I needed. I had a ton of capability in that kit - from 24mm to 600mm, plus a serious portrait prime, yet it was super small and light. The 12-32 continues to amaze me. This is my second copy of the lens, because I was an idiot and sold my first one, and picked up a 14-42 PZ instead. I hated the 14-42 PZ (maybe it was just my copy), and picked up another 12-32. It has been just as great as the first copy I had. I am amazed at how many pictures I take at 12mm - I missed it like crazy when my zoom started at 14mm. The 100-300 did a great job. At 100mm it is fantastic, and throughout the range it is more than adequate for my needs and budget. At 300mm, any problems with image quality are much more likely to be because of the photographer (me) than the image quality of this lens. The capability to go all the way out to 300mm is awesome when you are travelling! OIS may not be as great as on $x000 Canon lenses, but is surely did the job for me. The 45mm prime is a great focal length. When you put it on the tiny GM1, no one would imagine that you have a powerful portrait camera setup in your hand. Bottom line: I didn't come home with any gear regret or envy. Way to go Panasonic and Olympus. Tim If you're really bored, you could see some of the pictures here. Just family vacation photos, but in a great place (Australia).