Antec is a good brand, but don't buy based on wattage alone. High wattage is generally good, but some companies use cheap parts and disingenuous test conditions to achieve unrealistically high wattage ratings. More important is amperage, especially on the +12V rail. Check the box for the ratings on each rail (3.3V, 5V, and 12V) and get the highest ratings you can afford. A good PSU should deliver at least 25A on the +12V, preferably 30 or more. I bought mine a few years ago and it does 34A on +12V, so a newer one should have no trouble doing that.