There’s no one right answer, because different people have different needs and preferences – – and, of course, budgets. The GE line is a budget line, and very popular for that reason, but it just depends on what you need.
Two good places to start are first, the device features FAQ, which covers a lot of the reasons why you might choose one model switch over another. The light switch discussion starts around post 40 in that thread. (This is a clickable link.)
Next, if you go to the community – created wiki and look at the Quickstart lists, then look down at the bottom of that page for the project reports section, the first list there is the “get started“ list. It has a lot of topics you will probably find interesting, including “the top 10 things to do with SmartThings.” Have fun!
