Which Salt Mix is the Best?

Here is a study of the most common seawater salt mixes.
http://reefsaltanalysis.googlepages.com/AWT_Salt_Analysis_0208.pdf
To me it looks like Coralife seems to be the best. Interesting.

Here is another analysis. http://saltaquarium.about.com/cs/seasaltmixes/l/aa090503b.htm