Based on the experience of those who are miners, I would like to know the following:
What is the best ASIC miner for those with an energy cost of $0.20 KW/h?
I've no experience, but you can visit
https://www.asicminervalue.com/ and set electricity rate to $0.20 kW/h to see which ASIC profitable. But at time of writing this post, only non SHA-256 ASIC offer some profitability. But the profit depends on price of altcoin which use algorithm supported by the ASIC and you still need to calculate ROI by yourself.