Rosetta Stone Vs. Duolingo; From Someone who has completed both programs

Rosetta Stone Vs. Duolingo. Which is better? My opinions (in a nutshell) after completing both programs. Rosetta Stone uses immersion style learning with great sound quality and specific photos but doesn’t apply any sort of algorithm or data base to keep track of your weak words or skills. Cost $199 for two year subscription Duolingo doesn’t have the cool pictures and relies on graphics instead. The speaking feature sounds computer generated, but the app tracks your progress and turns learning a langua