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on OS X I always used TexShop. I added bibtex when I wrote my Paper for my Senior Seminar class (man does bibtex make it super easy to deal with references in a paper, no matter how long git is).
Now on windows I use texnicenter. it has all available documentation built in (the stuff I used while on the mac) and the IDE environment is very good.
I played with Kile and loved it as well. never tried your app before.