I have my excellent E-P5 camera and enjoy it a lot. However, I started to think about making a change to E-M1 I shoot posed portraits and sport only. Want to listen your idea and advice about such migration. Benefits of E-P5 - all functions I need, stab, smaller size and weight (important), build in flash (for WR management) Benefits of E-M1 - bigger body for my big lenses, 81 vs 35 focus points, PAF, Phase detection AF and better C-AF for sport. Weather sealing - no difference as I do not shoot when its required, never. viewfinder - no difference, as I use LCD and external devices too. External mic, HDR, screen resolution - no impact.