[_emacsomancer_]

Equally, AUCTeX in Emacs for direct editing of LaTeX (best TeX editor there is).

(For more complex documents, I've had better luck manipulating TeX directly rather than via another layer, e.g. Org mode, which is fantastic for other things.)

[shstalwart]

Agreed. Writing with AUCTex plus helm-bibtex is like a dream. I like org-mode but I find it a too limiting for actually writing papers in.

[kleiba]

Would you mind elaborating what is so great about AUCTeX? What makes it the best LaTeX editor?