as noted above, the VS is junk and i would not trust it. the CX is not great either but its still better than the VS and is passable if you can afford nothing better.
ideally you would get a seasonic or xfx branded unit and you should be able to find one for a reasonable cost. rosewill capstone (made by superflower), evga g2 (superflower), antec highcurrentgamer, and corair's ax/hx series are acceptable as well.