Hmm..the k600i..its a 3G fone..but wid the 3G service status in India..y go for it?
Since u are also considering the 6630..i guess you could go for w550i..not 3G but with 256 MB memory...
the k600i comes with 38 mb memory and no slot for expansion...
http://www.mobile-review.com/review/...-k600-en.shtml