Which is Better?

What do you guys think is better for outlining and cleaning up animations, the pencil tool or the paint brush tool? I usually set my smoothness at 2, and my thickness at 2 as well, if you need to know this info as well.

Hello. The outlined depends on the personal style of drawing. The brush tool creates more free shape contour lines (require more memory), and with wacom tablet, thickness line can vary with the pen pressure.
The pencil tool creates centerline shape and width is based on the maximum value assigned to the pen. Centerline can then be converted in line shape using Tools / Convert lines to brush. I hope that is helpful. Yoryo