An excellent free WinZip alternative if simplicity is your priority
Built-in virus scanner
Well designed interface
Zipware looks as good as any premium file compression software, and is wonderfully simple to use. Simply choose 'New' or 'Open', choose your source file or archive, tweak a few optional settings and you're done.
Zipware's standout feature is integrated virus-scanning: if an archive is under 32GB, you can check it for threats with VirusTotal. This is unlikely to be of interest to power users, but is a helpful addition for anyone who's unsure about extracting downloaded archives (or who knows someone with a tendency to accidentally open such things).
Zipware is free to use, but if you decide to stick with it, the website invites you to make a donation to support its development – a reasonable request if you can afford it.