AFAIK Jazz 1.3 variants have rear drum-brakes. Only the 1.5V gets Discs all around.
As for the TS
Get the Jazz because it's cheaper than the 2 *757k (correct me if I'm wrong). On the other hand, get the 2 because it's very much lighter and quicker. Handles perfectly too. Downside is, it's tight inside and cargo space is almost nil. Also, the interior feels cheap. Clunky and hard plastics, no daytime-illuminated gauges, etc. Anyway, It's still based upon you.