I have found that you want to play small pots pre-flop with KQ suited. With KQ you are hoping for a broadway draw because if you raise pre flop and then someone 3 bets you,
how confident will you feel if a King or Queen flops? In this situation you could easily be against someone with KK, Ak, AQ (If only the Queen hits you will be dominated) QQ or even AA. If you miss the flop completely which will happen 2/3rds of the time, I would tend to just fold if the action gets heavy. You really don't want to be chasing a King or a Queen on the turn or river in a big pot because you might already be drawing dead against someone with one of the
hands I have mentioned.
I wouldn't suggest getting into large battles with just top pair with KQ. Even suited you could be put under serious pressure if a flush draw comes and your opponent has the Ace for that flush draw, those are situations where
you could easily go broke. I would suggest therefore to
play KQ very cautiously pre flop and to play small pots post flop if we are talking about top pair. If you hit two pair even then you should be highly cautious because again you could be going against QQ/KK. For me KQ should be played with extreme caution and don't get all your chips in with it (Unless you get broadway). Not a fan of KQ to be honest as it can
put you in some very difficult spots if the pot gets big.