I test drove the Yaris before getting my EX.
Have to say, I think it's a really nice car, it feels faster than the Jazz, certainly is more nimble through the corners, has all the features the Jazz has and has some great extras you can spec for it including a glass roof and head up display.
Against that, the Jazz interior feels far more premium, the Yaris just felt cheap inside, also the infotainment and drivers display are leagues ahead in the Honda.
The Jazz is vastly bigger inside, both in the front and back, the rear of the Yaris is tiny.
I much prefer the way the Jazz drives too , the Yaris has a 6? speed auto, and while smooth , it just feels like any auto car of the last decade, whereas the Jazz feels like you're driving an electric.
So all in all, if the Jazz wasn't about , i'd have happily got a Yaris, but i'm glad I didn't .