if your going to spend 100 bucks get a hiper type r 580 watt
they are really reliable and they are modular which is a really nice thing to have theese days
I have that PSU in my current rig, and it's a great PSU. Very stable...running my rig 24/7, ever since I first turned it on, except when changing parts. It looks great too. And is more than enough power, with your future upgrade.