My 2 cents. It should ship with the noctua fan by default. The regular fan is way too noisy. It's not a good experience out of the box. It makes you question the entire purchase. 

 Have heard good things about those, though never tried. Think they’re about double cost of a cheap one though (only a few dollars) 

 Yeah, it's about 10 to 20 dollars extra depending on where you buy. But finding the right model is an issue. It would be better if the store already solved that problem.