BEHR Paint & Primer in One or Self-Priming paint is by far the poorest quality paint on the market.
First of all, you don't mix primer and paint together. The pigments in primer and paint are for two different applications. Primer is a sealant and generally has a high pigment content or Pigment Volume Concentration (PVC) and is use for undercoating.
Paint is for top coating. Paint consist of three chemicals; the pigment, binder and thinner. These three chemicals must be blended in the correct proportions. Mixing primer and paint together alter the balance of these chemicals. The incompatibilities between primer and paint mixed together can result in lifting, wrinkling, poor covering and a lack of adhesion and therefore should not be mixed.
Never buy paint mixed with primer. If you're doing a paint job then use primer first and then use paint for your top coat. If you buy paint mixed with primer all you are getting is colored primer which is not recommend for use as a top coat.
Paint mixed with primer should only be used as an undercoating if you are trying to paint a light color over a dark color, and then use the same color paint for your top coat.
And if you want a good quality paint then use Valspar. Valspar is one of the top ten paint brands in the world.
I hope this helps.