^Yeah, the actual production of the scene and the performance is more important than the specific girl.
For my preferences, this is the basics for producing a good scene (apart from a decent looking girl of any nationality):
# Big loads and mouthfuls that's challenging enough to make it interesting.
# Guys not missing the mouth.
# Girl with head back and wide open mouth, not turning forward.
# Girl and camera not moving around the whole time.
# Girl not shaking her head from side to side or gargling the cum, because it makes the cum look like milky water.
# Girl taking time to show the cum with head back before swallowing, without the scoopers fingers interfering.
# Good close camerawork.
# Clear natural picture quality.
# Absolutely no sneaky edits to fake continuity, only normal straight cuts if needed.
A hot good looking girl can add quality to a scene, but never save a poorly produced scene. But good performance and production can make a top notch scene with any decent looking girl.
And of course always quality over quantity - 50 big fat loads are better than 100+ thin weak loads.