The E-1 vibrates dust off the sensor every time your turn it on. Also, the 5Mp ratio is working out well. And, the 4/3 ratio requires less cropping than the 6MP ratio and so the net is close to the same pixels per image. Looks like they've got a winner with some in-between features and in-between price. They're selling, though perhaps not as well as they'd like.
CRB
