I think notepad++ already has all of these features and is free. It's been my editor of choice for years.
Notepad++ is somewhat nicer though.
Sublime Text on the other hand feels simultaneously like a fresh break from the Emacs tradition and like a true gem among the proliferation of half-baked notepad replacements like notepad2 (Scintilla-based, too), gedit or Kate.
It adopts best features from Vim and TextMate in a surprisingly clean way.