Tradition
I'm usually more objective than this, but my feeling about the Tradition is that a machine that beautiful cannot possibly be the "worst ever." John gave me a beautifully restored Tradition for my birthday, which I chose to keep in its original conformation, rather than adapt it to use the G-series bags. It cleans just fine, although I would be interested in seeing if there's a difference between it and other models, maybe in a cleaning contest-like test.