Is there really a difference between the quality of paint and the brand?

Quality Paint = Good Brand like Benjamin Moore. There is a difference between cheap paint brands like Behr and premium paint brands like Benjamin Moore.

Three components to the quality and the longevity of the paint job.

Prep: it’s all about the prep, the more prep, the better the paint job will look and the longer it will last.
Labor: the better the painter, the better the paint job looks and the longer it will last.
Paint: the better the quality of the paint, the better it will look and the longer it will last.
There are four key ingredients that affect the quality of the paint:
  • binders
  • liquids
  • additives
  • pigments
Higher quality paints have more of the most important and more expensive prime pigments which in the end give you easier application as well as better color retention and better durability. The better binders help your paint adhere to surfaces better, making them more resistant to cracking and peeling. Liquids are the carriers that allow you to get the paint from the can to the painting surface. Top quality paints have a greater ratio of solids (pigments and binders) to liquids. The cheaper paints are more watered down with liquid.
High-quality paints cover the old paint job much better, with less work and less retouching required, which can also mean fewer coats. With higher quality paint you have minimal splattering allowing clean up to be much easier.  Higher quality paints stand up to repeated cleaning without coming off.