Got my and my wife's parents all-in on iPhone + Macbook Air/Pro + Watch (with a single iPad Pro) and honestly it's been fantastic. Only problem is that they forget a password here and there and I just have that in my password manager. After that, the ecosystem is just super convenient: watch finds their phone, find my friends has their/our location, Facetime dials in pretty easily.

Honestly, the problem with the Apple ecosystem is that hooking it up into a machine is annoying, so our claw-like has to be on a Mac Mini. But apart from that, everything is pretty good.