'As my preferred family tree programme is Legacy, I just use Roots Magic Essentials for downloading every week or so, which means all attached records will be viewable if subscription to Ancestry lapses. '
Just checking Margaret - do you mean just data records eg. census or do you mean all media i.e. photos too?
Pheno
Any information you enter to Ancestry is attached to the same person in Roots Magic. That is any weblinks, any media, any sources, any records, any photos shared from another tree.
As I already save direct ancestors records individually to my computer, they take up quite a bit of space. Downloading these again, plus any records I have already attached at Ancestry to non direct descendants, means you need quite a bit of room on your hard drive, but modern computers cope quite well.
Recently for some unknown reason all of my Ancestry attached photos and files disappeared overnight - Google search finds this to be a common problem. Roots Magic to the rescue, as long as I remember not to delete it, a version of all the media has been saved.
I won't bother putting them all back at Ancestry, would take too long, but at least I have those photos perhaps saved from other trees (my own photos I obviously have copies of).
I presume Family Tree Maker 2017 works in the same way.
Regards Margaret