Let's think more deeply. Usually why do people use bitcoin? For anonimity, correct. Is there better alternative? Maybe yes and that's monero. What's litecoin? Another bitcoin. So there is one thing better in anonimity than bitcoin and litecoin. Also remember bitmixer's statistics, they were mixing huge amounts of bitcoin, as owner claimed 1 million btc (if I am correct). So monero will be used widely on darknet after bitcoin. They also play important role if coin's economy. So I would go on Monero proudly.