Most profitable cryptocurrency miners has been released : 
DBT Miner: $7,500 (Bitcoin), $13,000 (Litecoin), $13,000 (Ethereum), and $15,000 (Monero) 
 
GBT Miner: $22,500 (Bitcoin), $39,000 (Litecoin), $37,000 (Ethereum), and $45,000 (Monero) 
Read more here : 
https://www.yahoo.com/now/bitwats-release-most-profitable-asic-195600764.html