Behr, but you didn't say what you were painting. If it's an interior wall, choose what you like. Exterior? Well, Behr is very good, Sherwin Williams is even better.
I and Consumer Reports say...Behr!! BehrUltra..Behr Marquee..best on market.
Both are equally good paints.Price determines which you can afford if its for a small or large job.
Buy a tiny can of each sand see which works best on what you are painting
