I'm looking at micro 4/3 cameras because my Nikon stuff has just gotten too cumbersome to lug around. But I'm having trouble getting my hands on actual Panasonic cameras, and I'm unwilling to buy a camera I haven't handled. Since I'm new to this world, is there some history I don't know? I can't find an online list of dealers who handle the cameras, and the large stores in my area list them as out of stock. Can someone explain what's going on?