I'm gonns be attempting a thru hike of the Appalachian trail this year. I currently have a D300 with various lenses. I'm trying to keep my pak weight as low as possible. Any suggestions for super point n shoot cameras or possibly m4/3's? I'm slightly leaning towards the m4/3 'cause I feel like its a better compromise between weight and pic quality. I'm not saying that point n shoots can't produce decent pics, but the sensor is so much larger on the m4/3s. Thanks for any insight.