I'm definately going to buy one of these three cameras in the near future because they offer improved video clarity over the 1st and 2nd generation PEN cameras. But are the E-PM1 / E-PL3 / E-P3 truly identical in terms of video capabilities and quality of output? Or does the E-P3 have the edge in some ways such as either better video quality or more manual control over shutter speed, arperture, iso and so forth? Or is the E-PM1 truly capable of doing anything an E-P3 can do, except for the fact that settings must be selected using the menu system rather than more directly with dials and buttons as on the E-P3? Thanks.