I see this limitation mentioned often when Atom is discussed.

On the constructive side of things, anybody have recommendations for editors that do handle large text files well?

Obviously vi and emacs do. (Correct?)

OSX - TextWrangler and its big brother BBEdit are the best I've found - but this is not something I've extensively researched.

Windows - UltraEdit boasts that it can edit files of arbitrarily large sizes and in my experience this is true. UltraEdit costs money but I have an old version I keep around for when I need to work with bigger files.