@SuperSaiyan10, If you can stretch to the S12II 520W from SeaSonic, that would be a very smart move long-term.
If not, the Antec VP450P is the best of a relatively poor bunch.
@The Paladin, the older CX lineup is by no means the worst you could have. I've seen plenty of poorer options while browsing to assist members in India (lots of off-brand, Diablotech etc), but it's also very, very far from the best. You also have the CX750 (from you sig), which is actually a little better than the lower-wattage 430/500's. The new CX's are acytually pretty good (CX450M / 550M / 650M)