I'm weighing up the pros n cons of Lightroom & Capture One Pro.
As neither iPhoto & Photos offer non-destructive editing (i.e. you need to create a duplicate to edit as I understand - even then you have to export RAW and edited images separately rather than in bulk to keep the versions you'll probably want - all meaning unnecessarily large gig-age(!) for libraries. Also, both seem to bury original images deep in their library and reference edited images from them, making them difficult to manage. Both carry plenty of metadata but, as an earlier poster pointed out, it's difficult to get it all out when you export.
Furthermore, until this update Photos converted and RAW images to jpgs! Photos has come on a fair bit but as a metadata storage and management medium it comes a long way 2nd to iphoto. BUT iPhoto will die - the imminent introduction of AFPS almost guarantees that.
I'D be interested to hear of anyone's experience of Lightroom and Capture One for workflows.
Note: I use Photos at times, not against it, but accept its limitations. Outside of iPhone/iPad/laptop synchronicity it's a limited use tool .
HAs anyone had a positive experience migrating their iPhoto library to 3rd party software? - retaining titles, description, AND GPS location, camera and lense data, keywords, etc? (i.e. All of it!)
PS iphoto exports to Photos make all you're Events into Albums... 15 years of events over 750 of them) means I'm definitely not using Photos for all my work!