The cheap Inside Sun 400HPS is a pretty decent bargain. It's reconditioned; if you want a new one, go for the house brand 400.
If you are going to blow your budget on just a light or 2, get a small HPS (250 or 400) and two shop light fixtures, 2 bulbs each, which cost $8 at home dePOT and can be used for seedlings and vegginf very easily.