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I've published 17 books with it. Works great on my Mac and now on Linux as well now that I discovered WineFish (previously I used Kile and had trouble when I changed font size, the combo box would stick and so it was a pain to use).
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.
Winefish is based on Blushfish the html editor and should be available in your Linux distributions repositories. It is for Ubuntu. I use TeXShop on the Mac as well. I have never tried LaTeX on Windows. I thought of trying an XML document authoring solution like TEI or Docbook since my area of academics is the humanities, but I LaTeX is so much more efficient, so much simpler, so much more support, it is many good free editors on the Mac and Linux, and I can convert it into almost any format I want to and it keeps most the structure and formatting. And the text looks great when I get the books back. And LaTeX availability is so widespread - they even have one for RISC OS as well. I self-publish with Lulu and I never had a problem with formatting using LaTeX. I also make great PDF/A-1a's with tagging via OpenOffice.org for another version of my texts. I get it into OpenOffice.org via latex2rtf and it even preserves structure that way. I even embedded Flash Paper versions of my texts in a PDF just with LaTeX and it works in Adobe Reader.