http://www.directron.com/tt500ss.html
I have an enermax too, they are good but aren't cheap, guess you get what you pay for..
Follow the above link (It does work, I tested it) - I saw it mentioned @Virtual-Hideout, and the guy raved about it...
Price seems competitve too, with 520w costing $85, or a 470w for $75
Specifications: Model No: TTGI TT-500SS (520W). AC Input: 100~120Vac/200~240Vac, 10/6A, 60/50Hz. DC Output: +3.3V~28.0A, +5V~50A, +12V~20A. +5Vsb~3A, -5V~0.5A, -12V~0.8A). MAX OUTPUT POWER: 520W. Ten IDE connectors, two floppy connectors, +12V power connector, Aux power connector.
Features: +5V stand by 3A, the largest current in the market. Fully support all Intel & AMD series demand. Triple ball bearing fans, Long life and fastest cooling time. Noiseless fan designed, offer the most silent and coldest condition. High-quality gold-coated fan cover & connectors (Better conduction). (Tube-tide design), Tidy your wires. All DC output wires have 50CM (50mm) length.
Hope this helps as a second possibility...