There are so many mlm products these days from all over the world. All claim some unique quality. Is there a chance of objective comparison without "becoming a member" at all?
I recommend you do a little research with the MLM Search Engine. Being community driven it’s a cross between a search engine and a Wikipedia. You can add, delete and improve the results for much more focused answers than a general search engine can provide. http://www.search-mlm.com