I have this freind that been a Canon user for many years, until last year when he picked up a GH1 so he could use it when we go on hikes in the Summer, it's he with the GH1 that got me into m4/3. He got so into m4/3 that he also added a EP1, and put all his Canon gear up for sale, which included at the time Canon 50D, 10-22mm, 17-40L, 24-105L & a rather nice 70-200mm F2.8L IS. Until recently he was happy with his m4/3 setup saying what a breath of fresh air using this kit was. Until today that is when he phoned me & said, I've just sold all my M4/3 kit, asked him why? to which he replied as nice as the GH1 & EP1 was he just felt he wasn't getting out of the camera's that he was getting with his Canon setup. And misses the speed & handling & image quality his Canon gear gave him,also the large selection of glass on offer. He also said when using the GH1 he felt he had to nurse the camera as it wouldn't take any knocks or bangs when out & about. Anyroads with the money he got from selling his m4/3 gear he just bought a Canon 7D & picked up a used 17-40 F4L again & a 50mm F1.4. My conclusion is I think personally the novelty has worn off with him using m4/3, & the lure of the Canon 7D was to much for him to resist, as he use to alway moan about not having a camera in the Canon range like the Nikon D300. And after thinking about this, we could see a trend like this in the future, were alot of people have sold on the DSLR's & moved over to m4/3 & once the novelty gone move back to DSLR's, when new exciting models are released in the future. I personally will not be going back to them,as i like m4/3 setup as it suite me down to the ground for what i use a camera for.