Can someone help me with the various camera designations such as GH, GX, G3K etc etc.? I come from the Nikon world where Dxx refers to consumer DSLRs such as d40, Dxxx refers to prosumer such as D300, Dx refers to consumer bodies such as D4. It took me a long time to figure out their naming system, What significance do the different Panasonic designation have? For instance is there anyway I can tell which bodies have an EVF? I don't want to waste my time looking at ones that only have a rear LCD. The reason I am asking is that I expect to be pulling the trigger soon on a used Panny, and I am getting somewhat confused. Thanks!