What do you like best?
Atom is a beautiful editor. It's sleek, cutomizable, and a complete rip off of Sublime.
It has everything out of the box. Download the IDE and you can start working on any codebase with correct syntax highlighting, and code navigation.
What do you dislike?
Its exactly like Sublime but 20x slower.
In short, Atom is built with the wrong technology, and it suffers greatly.
Recommendations to others considering the product
I know I complained a little bit, but its legitimately one of the best editors.
Its not a fully integrated IDE, but you can install the plugins and do a little tweaking to get it to mostly any workflow. If you're on windows doing c++/c#.. you may want to consider visual studios,
If you are on a mac doing web development, use this editor, no question!! It integrates great with github too. Consider sublime also, but they are really both the same for the basic user.
What business problems are you solving with the product? What benefits have you realized?
I use atom on occasion.. mainly for web development, but even then I've mostly switched to Sublime.
Since Atom is backed by github, it has a pretty good community. So foes Sublime, but I'd say atom's community seems a little more active. Community is always an under-represented strength of technology.
You can have a great product, but if there is no community, it never be used to its full potential.
You can have a bad product, but if all the work-arounds and support is available from the community, you can get by just fine, and the community (who actually cares) will improve the software.