Had a test drive in the Jazz Advance today and I have to say, I didn't really notice much difference in performance.
One thing I didn't like is the change in steering wheel from padded 'leather' on the old EX, to a cheap looking solid plastic, which just didn't have the same 'feel' about it.
So, I have to ask myself, why would I upgrade to the new model, which to my mind is not necessarily better?
Granted I've had a reasonable P/X offer on my old EX, but the new price is several £1000s more than the old.