It of course depends on the table, your image, blah blah etc. But in general I like KQ to open raise early in a tournament from mid-late pos. Moving on in the tourney, or when I have chips to play with I really like raising from any pos with it. The only time you're really in trouble is va AK, AQ, AA, KK, or QQ. Usually anyone holding these hands will let you know with a reraise.