What's better Fluenz or Rosetta Stone?  

I haven't tried Fluenz, but i have Rosetta Stone French and really like it.

They are very different and it really comes down to which way you tend to learn. Rosetta Stone will not use any English at all, but rather will throw French words and images at your for hours and hours. The theory is that as you match words with pictures you would learn just as your learned your first language when you were a child. Fluenz is the opposite. They believe that teens and adults learn differently than children because their brain is different, because they've developed short and long term memory, and because they already know at least one language. Instead of throwing images and words randomly, a tutor on video will walk you through French in English so that you get to understand how the whole thing works from the point of view of an English speaker. After the explanation you get to practice everything.
So, it really depends on what works for you.

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