If you can take a color sample from the ceiling (ie if its peeling or you have to do a repair) and can get that matched I have gotten one coat coverage with super spec. The super spec is whiter than their ceiling paint so it doesn't cover as well without a little tint in it. I hate super spec for ceilings though, runs all over the brush, is really sticky. I actually had to thin it just a touch so I could work it well enough. If you can spec aura for ceilings (probably pretty tough) but it makes a great ceiling paint, very low splatter, great coverage, should be a 1 coat which might make it worth the extra cost.