One thing that should be considered is licensing.
Notepad++ is free (as in speech and as in beer) for perpetual use, released under the GPL license, whereas Sublime Text 2 requires a license.
To quote the Sublime Text 2 website:
..a license must be purchased for continued use. There is currently no
enforced time limit for the evaluation.
The same is now true of Sublime Text 3, and a paid upgrade will be needed for future versions.
Upgrade Policy
A license is valid for Sublime Text 3, and includes all
point updates, as well as access to prior versions (e.g., Sublime Text
2). Future major versions, such as Sublime Text 4, will be a paid
upgrade.
This licensing requirement is still correct as of Dec 2019.