Please help.....important...

Hey guys......i put up in Lajpat Nagar-2nd, New Delhi......i am using MTNL BB 256kbps combo unlimited plan, but my downloading speed is around 20-25kbps and also there is problem going on with my mtnl connection, that its get disconnected, after a while and for that u have to switch OFF and then ON, manually, otherwise, the downloading will not continue.
So all in all, I'm fed up of this, i was thinking of other connection. i saw this reliance connection, saying Rs.699/month, night unlimited with 300kbps downloading speed and day usage is just 500 mb, and when i talked to their CC, they told me generally 1/8th of the speed is for browsing and rest is for downloading, so he said, u will get an speed around 200-220kbps.
Is it this...?? or its something else....??
Is any other connection offers good downloading speed, even for night only....because i generally do more downloading and less surfing.
So friends please help me out with this.....!!
i am really looking forward to ur reply.

i think so in lajpat nagar airtel is available.....why bsnl,,mtnl,,n all other fluffy bags......whn u can hv the best why say the story of taking the rest.....