You'd be more likely to drive one if you put a deposite down on one, which you probably don't want to do, but then again you might find one you can drive.
I'm sure all of the other sub-compacts are much more cheaply made and manufactured but I like the size and wieght of the Yaris more than the Fit and the fact that it would blow right by the Fit in most cases. But if quality and fuel economy are what you're after then I say choose the Honda.