I'm looking for a telephoto zoom for my EM5mk2. Due to budget constraints I have narrowed down my choices to the Panasonic 100-300 or the Olympus 75-300. From what I have read the Panasonic is a half step faster but it is also heavier and larger. Some reviewers think it is also a bit sharper than the Olympus. However, I have seen many images shot with the Oly and they seem sharp enough. Does anyone have experience with both and can give me some feedback on the IQ and other things I may need to consider?