my friend, linux is all about choices. This is what makes it fun and beautiful.
As I understand it, both are based on 6.0 final. The changes are minor, only few bug fixes and re-designing the look and feel of the distribution. That's all. The ISO provided by our friend Tony has more options and customized in a way that meets most of our requirements, which is good. If you want those additions, then get the custom ISO from Tony. If you want to keep with the same options as of 6.0 final, but with the new look, get the fresh ISO issued by contribs.
Good luck,
Leonardo