I'm researching my next camera buy, I have chosen to go mirrorless. Trying to learn about the various camera systems offering in mirrorless. Two Olympus are on my consideration list, M10 II or EPL 7. Besides one having a viewfinder What are the major differences? Both use the same sensor and have the same meg pixels, will there being a difference in photo quality? What system will have the better growth as I become more proficient with the camera. I do have SLR and DSLR experience.