So I have a Olympus EM10II and I am in the market to upgrade from my kit lens. As I have done a lot of research, I had pretty much settled on the 12-40 2.8. Well today I went to my local shop and they had a used one for sale at a decent price ($600) but when I put it on my camera it was just too heavy and unbalanced. I don't have a grip on my camera and I was hoping to avoid that route. So what is an alternative. Is the panasonic 12-35 that much smaller/lighter that I would notice a big difference? I was hoping to try one of those out too but they didn't have any in stock. I know the Olympus 14-150II isn't smaller but it is quite a bit lighter. Also it isn't quite as sharp/fast but it is more versatile. Would I notice much of an iq boost with this lens over the kit 14-42rII? Currently I have the pana 14 2.5, the sigma 30 2.8 the olympus 14-42rII and the olympus 40-150 4.0-5.6. My plan was to Sell all of those but the 40-150, get a 12-40 and get a small fast prime for indoor/low light (17mm maybe) But now after feeling the weight and how lopsided my camera was with the 12-40, I just dont know.