OK, hopefully, this will be the last power supply post for a Very Long Time.

The two competitors:

Brand	COOLER MASTER
Model	RS-500-ASAA
Price	$99.99
Type	ATX Form Factor 12V V2.2 / SSI standard EPS 12V V2.91
Maximum Power	500 Watts Continuous
Fans	Dual ball bearing 120mm fan
PFC	Active PFC (0.99)
Main Connector	20+4-Pin
Dual +12V	Yes
SLI Support	NVIDIA SLI Certified
Modular Cabling Support	No
Power Good Signal	100-500ms
Hold-up Time	17ms min.
Efficiency	81% (100W) / 85% (250W) / 82% (500W)
Input Voltage	115/230 V
Input Frequency Range	50/60 Hz
Input Current	10A @ 115V, 5A @ 230V
Output	+3.3@20A,+5V@15A,+12V1@14A,+12V2@13A,+12V3@6A,-12V@0.5A,+5VSB@3.0A
MTBF	>400,000 hrs
Approvals	Nemko / TUV / cUL / CE / BSMI / FCC / CCC
Features
Connectors	1 x Main connector (20+4 pin) 1 x 12V (P4) 1 x 12V(8pin) 6 x peripheral 2 x SATA 1 x Floppy 2 x PCI-E
Features	Intelligent Circuit Configuration Green Power Product High Performance@High Reliability

Brand	HIPRO
Model	TOP-600P5
Price	$74.99
Type	ATX V2.01
Maximum Power	600W
Fans	1
PFC	Active
Main Connector	20+4-Pin
Dual +12V	Yes
SLI Support	No
Modular Cabling Support	No
Input Voltage	115/230 V
Input Frequency Range	50/60 Hz
Input Current	10A @ 115V, 6A @ 230V
Output	+3.3V@28A, +5V@48A, +12V1@20A,+12V2@20A, -12V@1.0A,-5@0.8A,+5VSB@2.5A
Features
Connectors	1 x Main connector (20+4 pin) 1 x 12V (P4) (8/4 pin) 6 x peripheral 2 x SATA 2 x Floppy 1 x PCI-E

I think the Cooler Master continuous sounds like the better choice, but my knowledge of Power Supplies is rather limited. It's more than I wanted to spend, but seems tres secksay.

What do you think? Maybe you have a better idea?