I prefer Air Cooling so go with a Noctua NH-D15 if your case is big enough.
Alternative: BeQuiet Dark Rock Pro 4
Liquid Cooling/AIOs mostly suck anyways but if you have a small case where you can't fit a beefy air cooler go with a Corsair H150i
Alternative: Kraken X62
I recommend swapping the fans out with Noctua fans if you wish. They're more silent and have superb airflow compared to the SilverStone's I had.
Use Noctua NT-H2 for thermal paste, Thermal Grizzly Kryonaut is also really good.