Hi all. I've had an OMD-EM1 now for a few months with the superb 12-40 F2.8 Pro zoom lens, and after a rocky start we are getting on just fine now. I very recently had the opportunity to trade my nearly new GH3 body, for a slightly used GH4, with a pretty minimal outlay as the GH3's lack of Peeking, more restricted ISO in silent mode and a few other areas, gave the head to the GH4. Anyway, I now have both bodies and each are superb, but my question relates to the standard zoom lens. Like I said in my opening statement, the Olympus 12-40 F2.8 really is a very nice lens and super sharp, but obviously on the GH4 doesn't have any form of IS. I know that the Panasonic equivalent, the 12-35 F2.8 is equally respected by the Panny crowd, and would therefore give me IS on both bodies for those situations where IS is a benefit / requirement (slow shutter speeds / low light for instance). So, the question is, would I be better off selling on the Olympus lens in favour of the Panny, having both (an extravagance), or sticking with the Olympus lens and doing without IS, and switching to the EM1 body when it's required ? Would appreciate thoughts from anyone who's been in the same position please.