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To be sure, they are ALL supplements to good books like New Penguin Russian Course. But I find Rosetta slower than Pimsleur because Rosetta, though having the opportunity to tell you right away what...

I wouldn't do either! Well, not if i had to pay for them anyway. If you have the money to throw away then get both, plus get Pimsleur Complete Russian. If you less money to throw away then just get...