Noctua makes 2000rpm and 3000rpm max variants of the NF-F12. Otherwise, through (over)engineered geometry and materials, their fans usually do push the most air volume and pressure at a given volume level, with a more pleasant sound profile. But you pay for it.

Worth noting that you are also paying for the service.

I have RMA'd many fans through them and the experience is quick and painless every time.