leading into the raiser...

It's a raised pot and you call from either big blind or middle position or wherever.

Ex 1: say your middle position w/ KQ and someone raises from late.

flop comes Kxx and you bet into raiser then he raises. Does that really help you out information wise? It seems like he either has AK AA or hell he could have QQ or JJ where you fold the best hand and waste a bet doing it. People seem to respect check raises more, or maybe they don't but i think they do. Wouldn't this give you more information? Which brings me to my next question. What hands should you bet into the raiser? It seems like if you only bet your monster hands (top two, sets, big draws etc...) your giving away too much information or is that bad thinking?? Whenever I do this it seems like the opp. never folds and always puts me to a decision. Thanks for your help