I'm opening this discussion because i would like to hear what you think or your experiences. I've been using Nikon since the start, and i trusted and invested much on this system; both (part-time) professionally and as a hobbyist. But the sheer size and bulk of the system sometimes discourages me to bring one, from a point of view of a hobbyist who wants to bring a camera everyday. Enter the m43. About 2 years ago, I've purchased my first m43 camera, the GF1 + the 20 pancake. I was using it but just very occasionally until this year where i started to bring it everyday. I guess the confidence started to build up after months of use. On all my important holiday travels, I've almost always carted along 2 Nikon bodies (D700 + D3).... Last month I was on travel again, and for the first time i brought along my m43 (G3) and a Nikon body (D700) as a combo. Came home with 2700+ raw shots, 50/50 ratio between two bodies. Another confidence build-up i guess. On my next trip, I will be bringing a purely m43 kit. G3 + GF1. On a side note, this time i can bring a small travel tripod.