Few concerns on Kindle :-
Non user replaceable battery so not sure how it will be fixed , if God forbid it goes bad in India .
Native PDF support is very rudimentary without text re-flow so zooming and zooming out of a page to see the pdf file would be quite cumbersome
how can 3G work in India ?? AFAIK it would work only in places where Amazon has a tie-up with mobile network providers and am I am not sure if any Indian telco ( Airtel , Vodafone) has any 3G sharing agreement with Amazon for Kindle !!