Thank you Cortina for bringing in this thread. I was thinking about it from a very long time.
Now to your requirements.
Drop Swift from list as you are already an owner and new one is only new for the new people (nothing major to be considered as new).
Polo and Fabia are good buys and select anything with eyes closed on performance front. But if you want some features (which you already know)
. Consider Fabia over Polo, as earlier Fabia was without a wiper-defogger and 15" alloys. But things have changed now and it is still cheaper and bigger than Polo.
Jazz is something which I personally advice you to include in your list and consider seriously. After all it is HONDA man, with proven record and reliable service support. Whereas, Skoda and to some extend VW are not so good for A.S.S.
But before finalizing do calculate ownership of these cars considering on following parameters.
Fabia / Polo service intervals 15000kms / one year
Jazz service interval 10000kms / one year
Price of spear parts (though you wont be needing them so soon but still)
Service centre near your place.
Monthly running and average you would be getting. I think, you would get more in Jazz rather in Fabia / Polo.
And things like that which are coming in to your mind.
Take a wise decision, which you would I am sure
All the best