texstudio is easy to use and its also free.
TexStudio is my best choice
LyX is the most human beings for TeX beginner like me :D
I use Linux for many years of conviction. I started using Texmaker but had some errors, then I went TexStudio information which I believe is the best LaTeX editor. Who is user windows is quite a problem but if Linux is used things are much easier, faster and lighter.
If you require a LaTeX editor able to preview inmediately the output, I reccomend
For a detailed list comparison, see the link
For a month now that I've change my editor from TeXStudio to SublimeText + LaTeXing which makes my writing much faster.
I usually use Kile (Linux, KDE Applications), but you can also try: Texmaker, LyX, LEd.
TexMaker is the best free Mac IDE.
Jose Antonio Marone
National University of Central Buenos Aires
Dalian University of Technology
Robert Jacek Tomczak
Poznań University of Life Sciences
École Polytechnique Fédérale de Lausanne
Technische Universität München
FZI Forschungszentrum Informatik
The University of Northampton
Michigan State University
Anh Cat Le Ngo
University of Nottingham, Malaysia Campus
Federal University of Pernambuco