I can't decide between the Olympus 14-54mm f/2.8-3.5 II and the Panasonic Leica 14-50 f/2.8-3.5. They panny has OIS and from the reviews I have read, it looks like the AF may be better one the Olympus. I can get either one for around the same price. I will be using it on GH2 body mostly for video. Or should I just go ahead and get the $1000 Panasonic 12-35mm which does have that jitter issue.