When I was swatching Dior 794, I realized I had a couple more teals to compare.
My favorite, hands down is Chanel Azure. It just stands out more between the other two. Application wise, these are all 3 coaters. The color shift is great on the Chanel and the Dior, but the Pa is weak. The Dior had the easiest application of the three.
3 coats Dior 794 (pinky and index)
3 coats Chanel Azure (ring)
3 coats Pa AA77 (middle)
no basecoat or topcoat in these pictures