Once you go Notepad, you never go back.
I'm talking about that function that allows you to duplicate lines at a split second, the mighty CTRL+D.
Or, what about that super combination of CTRL+SHIFT+ALT, which allows you to do a vertical selection.
Or that CTRL+SHIFT+Q, which comments the selection.
I can go all day long.
In short, there is no IDE or text editor which comes close to Notepad++.
You can do all that in atom and brackets via plugins! Emmet for example, it's a great tool for web devs: http://emmet.io/
If those IDEs don't have that, you can always code them and implement via plugin. Personally, for web dev, Brackets is GODLY. Atom is more suited for backends and stuff, and I guess Notepad++ can do most things that Atom can, BUT Atom is hackable: You can edit its GUI via CSS.
They're all powerful tools.