Mix 2 Max and Success express are old plans which SW no longer promote.
The plans are Red, Green and EE. They all enable weight loss equally. Some prefer red, some prefer green and some prefer EE.
SW promote EE more than anything now. They do not say one aids weight loss any more than another.
Maketak, you really need to get some books from somewhere - it's hard doing this without any prior knowledge or a set of books!