Tier One
Very comfortable, but worth practicing with in order to build synergy.
Tier Two
Comfortable with, but would require some practice in order to be consistently confident.
Tier Three
Somewhat comfortable with, but would prefer to pick from Tier One or Tier Two heroes when the choice is available.
Tier Four
Uncomfortable with, would require significant practice in order to perform well.
Tier Five
Extremely uncomfortable with, would require extensive practice in order to make work.