To be honest, cooling fans never get the attention they deserve and end up whiney or buzzy.
That said, apple did a really good job with mac pro cooling fans where the shroud spun with the blades.
I think it did better than the the best PC cooling fans like noctua.
I always built PCs with the largest diameter fans possible - not sure why so many things come with tiny fans. Loads more airflow with less noise and even if they do spin up fast the noise they make is much more pleasant.