The WinRAR GUI also provides some neat features I haven't seen before, or at least not presented easily. I needed to delete a particular file from a bunch of archives (ZIPs) that was in some of them, but not in others and I didn't know which archives had it. WinRAR can search multiple archives within the archives for a specific file or extension, shows the output in the file pane and I was able to delete them all in one hit. Very niche feature, guaranteed not to appear in Windows when support is added. I'm a slave for heavy functionality software - it's bloat until you need it.