I'll get the 600w Corsair.
It will leave room for upgrades.
I don't need that much space and will probably never come close to 750GB anyway. The Western Digital has a 64mb cache so I'll swallow the 5 bucks and just do that.
Thanks!
I'd like to mention I'm getting this RAM now. Faster for 6 bucks more.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231277