I have to concur with Rick. Your old PSU is short one SATA connector. Add to that, it is older, thus more likely to be near its end of life. PSUs have been known to die spectcularly, taking other, and expensive, components with them.
I would encourage you to save your pennies and get the Corsair that Rick recommended (it's the one I'm going to use in my next desktop). While the Antec would work just as well, it has a two year shorter warranty and all the cables are attached to the PSU, meaning you have to find a place to put the unused cables and cable connectors. Beside all that unused cabling and connectors looking messy, they also restrict airflow that is critical to keeping your expensive components cool and not self-destructing from heat. A crowded interior also makes it harder to clean out dust that can cause overheating. Corsair PSUs have a better reputation than Antec. The one listed by Rick is semimodular. Only the 24 pin and 8 pin ATX cables for the MOBO are permanently attached to the PSU; the others are plugged in as needed, reducing clutter inside the case.