I'm a guesser. This was handy while I was living in Japan.
I can't decide, I would say I'm a guesser but at the same time I'm not afraid to ask for things I want if neccesary, and if "askers" ask me for things and I want to say no then I say no, I don't agonise about it and I don't see anything rude about asking for things.
I'm a guesser for sure. I put out feelers before taking decisions or asking people for things. Only exception is when I'm really desperate, then I just make demands and won't take no for an answer. I'm highly neurotic according to the BBC's comprehensive personality test, which probably explains it. Anxiety drives me to manipulate people for a "yes" in my normal everyday routine, and in desperation anxiety pushes me to be up front with people and ramp up my negotiating position.
Although I'm more of an asker than I used to be.