The biggest reasons are being able to open projects and view all of the files in the project (and search through all of them) at a quick command. I really liked the themeing functions. Multiple OS compatibility (I regularly switch between macOS and Windows), so I needed a client that is used basically the same on both OS's. And one license is for all of the computers you use, and on all operating systems.
The more I use it the more I like it. Sometimes I have files that still open in N++ and I quickly switch out of it into sublime. Oh, did I mention at the command line (in OSX) you can open files using the subl command (Very awesome).
Searching through files in my project is one of the few reasons i keep terminal windows open next to N++. A quick `find . | grep "php$" | xargs grep "search_term" -isl"` or even `grep -Ilir "search term"` is never too far away, but it would be great if it were closer.
My other nitpicks with N++ are the lack of a "yes to all" on the change-detection dialog when you do a hg update, and the way gedit seems to do ctags so much nicer. Seems like low-hanging fruit, maybe i should try to get a patch in..
Still, hard to beat and easy to recommend. I use it every day (it bought me a car!).
