It is hard to go wrong with the Prolima Megahalems or Prolima Armageddon if you have the room for it but I would only recommend them if you have a good amount of airflow in the case already to ensure VRM and other components on the motherboard get adequate cooling since they aren’t down blowing.
My own recommendation for 1156 is the Noctua NH-C12P SE14. The 140mm down-blowing fan helps cool the motherboard and is very quiet. It also uses under board mounting system–I can’t stand push pins and can say with confidence that I will never purchase a heatsink that uses them again.
