I use Sublime Text 3, and up until a few days ago I just used it as it came, with the Monokai color scheme (my favourite anyway). Recently I installed a plugin to color-code htaccess files, and to highlight CSS colors in the editor (which reminds me, it doesn't work, need to check that out again).
Otherwise it's just as it is, I love ST cause it's so convenient. Unlike notepag, if my PC suddenly reboots my work isn't lost. The select-multiple-line thing is magic, I use it all the time :)
Pretty much all its features are cool, I'm sure I haven't even explored the tip of the iceberg yet, so I didn't require any packages aside from the color-codes thus far..