i don't think he said Noctua was the best, only recommending it because they're amazing.
though on an aside, NH-U14S + NF-A12x25 would work out better in general with NF-A12x25 in push and NF-A15 in pull, the stock fan NF-A15 alone is simply too low RPM.
but before you replace your NH U12P, try to buy one NF-A12x25 first then replace it's push-fan, you should see a large improvement.
trolling an adult is very dangerous, don't try it at home nor at work. you don't want to play tag with a rabid man.