TeX live is the sure way of getting most of the popular and essential TeX related files, packages, compilers.
TeX Live has collection of TeX related programs, packages for Linux and other OS.
For more details of Tex Live visit http://www.tug.org/texlive/
TEXlive 2013 released.
Latest release of TEX Live 2013 is now available
Here is the link to know more about how to download iso : http://www.tug.org/texlive/acquire-iso.html