You should do all your buying when you are in Phoenix so you can get the free shipping from Amazon and Newegg. If you find that the 650w Antec is not enough then you can go up to a 750w and that should be as high as you would need to go.
Thanks again. I finally figured out how to delete the extra posts.
I do buy a lot when I am in Phoenix but I am near NCIX here in Canada and they are very competitive. I even bougt from their California location when I was in AZ.
The OCZ 850 Z was priced lower than the 750's here.