The HX750 is on sale right now, it's a great PSU.
Using coupon code EMCPEWA23 and a mail in reabate, it's $90.http://www.newegg.com/Product/Product.aspx?Item=N82E16817139010
Whatever PSU you end up going with, make sure it has at least
42A on a single +12V rail.
So would a Coolmax ZU-800B work do you think?
Yeah, that would be fine, based on the specs. I always recommend a name brand though like Corsair, Antec, Seasonic, XFX. PSU's are important and they can last a long time if they are quality units.