Balance: play in such a way that the strength of your stones are equal to or greater than your opponent.
Flow: feel the way your stones interact with each other.
Aggressive: attack as often as possible, try to force your opponent into
small living groups.
Defensive: form a big moyo and attack any invasion.
Passive: assume all opponent groups live, and try to play such a way that you form more than your opponent.
Flexible: able to switch strategies as the need arises.
Masterful: somewhere between Balance, Flexible, and Flow.

... the strength of your stones are is >= your opponent that of your opponent's
( strength & your opponent are apples & oranges; re-phrase )

( not quite what balance means... )

not that one, but i do go by phillip1882 on many websites