Well, I've joined the E-M1 fraternity (thanks Arvin for selling me your camera!). It's a delight to use over my E-M5. As much as I love the 5, the buttons are too small and fiddly and then there's the extra controls and nice grip on the 1. However, there's one little thing that I'm struggling to adapt to... I'm a back button focus user and I'm finding the AEL button a bit too far left making it a stretch to reach with my thumb; and the FN1 button is a bit too far right! I know I'm at risk of sounding like the sort of guy who'd kick Angelina Jolie out of bed for dropping toast crumbs!, and it's certainly far from being a deal-breaker - but I'd be interested to hear from other back-button focusers about their setup and experiences.