My intention was to buy the new Pen-F. However when I realized the Pen-F was almost the same size as the GX-8 I figured I should have another look at the Panny. So I did. Full disclosure - I have an E-M1 but my normal (ie not super telephoto zooms) are all Panny with Power OIS. The Bad: - IBIS is better than Dual IS assuming it was configured correctly (not 100% sure on this), but this tracks with the tested reviews. - Image quality is sort of a wash. Oly JPEGs are better than the standard Panasonic settings, the Panny has more detail when processed (not a shock 16MP vs 20MP). But this is pretty minor. - Panny will not work well with 4/3 glass obviously. The Good: - AF on both cameras is excellent, and if the reviews are to be believed DFD on the GX-8 is better than the E-M1 (with Panny lenses). - Both cameras are great in the hand. The GX-8 feels slightly lighter. - Both bodies are super configurable The Amazing: - The GX-8 EVF is stunning, by far the best and makes the already excellent E-M1 EVF feel poor. - The Panasonic menus - wow. Really easy to use and really accessible. - The GX-8 touchscreen - combined with the menus is very very slick. Oly could really learn something from this. - 4K video of course. I have to say the last four items are making me really interested in trying one... Talk me out of it please.