i'm always drawn to powerful women! my wife teases that i'm always flirting with "power bitches" as she calls them.
She is an EFTJ I think.. similar in some regards, but balancing and healing to me in the extroversion. Of course that's the part that drives me crazy about her too because it's hard for the INFP to keep up with all the events and doings (no down time to recover).. makes life interesting.

I am very attracted to strong women, and have a tendency to become obsessed if they are also very physically attractive; even if they are not that interested in me! I also sometimes go with the flow with a woman that I am only moderately attracted to, but who is aggressive and very interested in me. I actually do realize that in both situations I am trying to keep some distance in order to not get hurt. I'm still waiting to find someone that is as obsessed with me as I am with her, lol!

I find myself most attracted those that are opposite to me. Extraverts are fun to be around but i still only like to hang out with them on a one on one bases rather than group situations. I like feeling oriented people and somewhat spontaneous people as well. Of course this quality drives me crazy as our plans are never set on stone and change or get cancelled a lot. I agree that opposite personalities dont mean opposite interests. I believe that having similar interests on at least some things is very important in any relationship.

I do have a certain intrigue to strong, domineering women. Only, though, if they seem less emotional, colder, than average. I like them when they're brutally confident but not overly vain. Women like Jordan from Scrubs.
I have a difficult time telling though if it's attraction more than just sexual. Afterall when I imagine my ideal partner I imagine someone who enjoys cuddling and talking about deep thoughts and feelings perhaps as much as I do. I am quite content with someone who can just listen, though.

As for similarities in type I definitely don't want someone like myself. I actually recently went on a date-thing with an internet girl and we had so many similarities in disposition that I found myself bored! She must have been an INFP. Ideally I guess I'd want someone to be more complimentary than anything. I think comfort in simularities is slack best to be taken up by a good circle of friends. I think that spending so much time with one certain person should have more of a reason than constant affirmation of what you already know.