So how would you determine what the best coin to mine is? (Not saying your wrong I'm just trying to understand what method you would use).
You do your research on a variety of coins and pick one to mine that you think has a bright future. If you are using profit calculators to chase minute by minute profits you will end up losing out badly in the long run.
Chasing profitability day to day like that is how you determine if someone is experienced/educated in this space. People that chase daily profits just have no clue about how to do this long term.