I tried out the Corsair H70 and it's basically a H80 without the optional software functions. It's a good performer for the money (the price has dropped on the H80 since I reviewed the H70).
Newegg.com - CORSAIR H80 (CWCH80) High Performance Liquid CPU Cooler
The Antec 920 is basically the same thing as the H80 but it costs more. I would go with the H80.
Newegg.com - Antec KUHLER H2O 920 Liquid Cooling System
Newegg.com - CORSAIR H80 (CWCH80) High Performance Liquid CPU Cooler
The Antec 920 is basically the same thing as the H80 but it costs more. I would go with the H80.
Newegg.com - Antec KUHLER H2O 920 Liquid Cooling System