Granted, I have only used the windows included zip software, WINRAR and Winzip, but I gotta say out of them 7-Zip is the absolute winner. The context menu options are just what I needed, they're all grouped in a single menu, and not bloating the entire context menu, and cover practically every need.
Put simply, 7-Zip just plain works, does the job, doesn't get in your face. I used to use WinZip back in the day (before Window XP), but stopped using it after it succumbed to "upgrade-itis". I now use 7-Zip for all my archiving tasks, both at home and at work.