What do you like best?
I had grown frustrated with XCode's C++ support, and was using Sublime Text + Terminal for C++ development, which constitutes more than 80% of my workload.
Code bases with heavy use of templates and complicated object hierarchies were making me a lot less productive, so I switched over to CLion mainly for its IntelliSense-like code completion features. It has worked well. Automatic code generation from method signatures are also useful. Debugger support is surprisingly good too, allowing for breakpoint placement and variable lookup that are easier to use than XCode's.
What do you dislike?
cLion only supports CMake for building applications, and that is annoying, since it forces me to continue using the Terminal for solutions that don't have CMake support. Most of the projects I work with rely on make. But even then, going back and forth from the editor to the Terminal isn't terribly bad, since it's what I had been doing with Sublime Text as well.
I also miss the Monokai theme for the editor, that happens to be present in JetBrain's other IDEs.
Recommendations to others considering the product
Installing and using it is pretty straightforward, and there's a free trial available, so it's worth taking it for a spin and checking if it's well suited to the way you work.
What business problems are you solving with the product? What benefits have you realized?
Day to day software development, using CLion as the primary programming tool.