King-Queen suited I limp early position.If raised behind me I call if at least one other person calls(I prefer 2-3 callers though to increse my pot odds).Offsuit I fold early position.

Mid and late position I limp(my personal favorite case,esp if it's suited).Late position if I'm first in I raise suited(esp) or unsuited.

Preflop-here's where it really does get tricky.You could easily hit one of them but be outkicked(or worse,run into someone slowplaying Cowboys or Rockets).I usually base wheter I continue playing it IF I hit a flush/straight draw with the former my preferred draw as well.

Essentially it does come down to the situation and what your personal comfort preference is.