WinACE seems to have won this compression shootout. At least for the MOV file. The .tiff and .wav file compression size was comparable to .rar
http://news.softpedia.com/news/WinAce-VS-WinRAR-VS-WinZip-17365.shtml
winRAR supports writing and opening .7z files.
According to Wikipedias comparison page. http://en.wikipedia.org/wiki/Comparison_of_file_archivers
7-zip wins almost across the board.