RE:CSTR, cheapest miner... Hive mined 32,000 ETH and 89 BIT last quarter. If they do another 30,000 ETH in Q4 and ETH goes to $1000 that's $$$ plus all of their assets appreciate. This industry is one of a kind. As they are making money their assets appreciate with the increased demand for Bitcoin and ethereum.
If Bitcoin continues to surge, ethereum follows, and hive is just there for the ride.