Those are good choices. A 600-650 watt PSU would be plenty sufficient for your needs. I am partial to Corsair, Antec, and Seasonic, having had good experiences with all of them.
In what country are you buying this PSU? - I'll recommend some units based on availability at your location.
Actually, I am in hongkong, and there are few PSU that are available in my region. It may be a bit hard to find a sultable PSU for me. Anyway, thank you for your help