i would like to recommend airtel 128kbps connection, 14~15 kBps u will get. i also heard that at night from 10.30 to 6.00 am speed doubles i.e. 256kbps. same upload and download speed.
all this in just 699 + tax, i m using 64kbps connection from feb 2006 n working fine no prob, also cutomercare...