Snapjoy is awesome. I've been using it for a few months and have never looked back.
That's not to say there aren't Snapjoy features I want to see: the ability to create/share collections that span multiple dates/moments is at the top of the list.
But as soon as I started using Snapjoy I knew it had massive potential. I especially love the default timeline view, it puts just enough structure around your photos for discoverability, etc.
EDIT: I would love to be able to pay annually and save, though. $15 month is a lot of coin for a non-business app.