+1 for both above
The Hyper 212 EVO is not far behind the Noctua in performance, is much more compact, can be mounted horizontally or vertically, and can have the fan mounted in push or pull for RAM clearance. It does not need a 2nd fan. Already has excellent performance with just 1.
Other inexpensive coolers with good performance:
Cooler Master Hyper 212 Plus
Xigmatek Gaia
Another good high-end Air cooler:
Phanteks TC14PE