John,
If it is a small repair, you may want to test out a product at Lowes. Homax ceiling texture. I'd suggest trying it on a scrap piece of drywall (make sure it's at ceiling height for testing). ... read more
Phillip and Clifton have it right on. That's our reference as well. Digging one level deeper, the biggest bang for your buck generally comes from direct replacement projects. Meaning, if you need t ... read more