I am considering a new computer since my current one is almost 7 years old. Recently I have been looking at upgrading to an Apple laptop that will last me at least 5 years (never had an Apple computer). I don't do any gaming anymore but might dabble with photo editing. Also would use for work purposes. What would you recommend between the 13 or 15? Anyone else have this dilemma? I think my only concern is the price of the 15. Thanks.