Well in the last few years there has been a big debate in the paint world which all started due to a Benjamin Moore product called AURA. A number of years ago BM unveiled an Amazing premium product called AURA Interior. This product had a revolutionary pigment system called Gennex. With this we had a product with amazing coverage, fast dry time and the ultimate in durability. It was also a self priming interior wall paint. It could go over new bare sheetrock, existing paint and more. Well the rest of the paint world wanted to run with the thought of Paint & Primer in ONE. They did, although the only true product that can do it is AURA- The rest all disclaim to need a previously coated surface. Just keep this in mind when you are buying your next gallon of paint!