Best priming option for adding a bit of sweetness?

[Hjandersen]

I'm about to bottle a pale ale that (in my taste) went slightly to the dry side.. Which sugar/fermentable option is best to add a bit of sweetness to the beer?

 

[zachattack]

Most sugars are very close to 100% fermentable, but malt extracts are around 75%. So if you prime with DME it would leave a little sweetness. You can also try to add some lactose,which is completely unfermentable, with your priming sugar,