This is the correct way of determining which PSU is better:
NZXT HALE82 HALE82-750-M 750W ATX12V / EPS12V SLI Certified CrossFire Ready 80 PLUS BRONZE Certified Modular Power Supply - $120
+3.3V@23A, +5V@25A, +12V@53A, -12V@0.5A, +5VSB@3.0A
CORSAIR Enthusiast Series TX750 V2 750W ATX12V v2.31/ EPS12V v2.92 80 PLUS BRONZE Certified Active PFC High Performance Power Supply - $105 ($95 after rebate)
Up to 85%
+3.3V@30A, +5V@30A, +12V@62A, -12V@0.8A, +5VSB@3.0A
CONCLUSION : as you can see, the CORSAIR 750w has higher EFFICIENCY and OUTPUT CAPACITY especially on the +12V RAIL which is 62AMPS while the NZXT has only 53AMPS on the+12V RAIL.
Thus the Corsair brand has better quality and is more heavy duty.
You see guys, having a modular PSU is nice, but it doesn't really improve the OVERALL capabilities of a PSU, it is good to have a modular type due to better airflow (if you are one of the few people who are incapable of proper cable managment) but having better efficiency and HIGH OUTPUT CAPACITY must come first when choosing the right PSU, being modular should just be an added BONUS, good to have but not necessary.