Wired Broadband Guwahati (Assam)

I am currently located in New Delhi and have MTNL 4Mbps unlimited connection (as that's the max they provide). I am planning to relocate to my home back in Guwahati (Assam) and get wired broadband. My minimum requirement is 8 Mbps or above (either FTTH or ADSL). But I am really worried about the speed & reliability of the connection over there. Internet is like "Bread & Butter" of my income, so can't really make the switch before confirming it.

Any suggestions or help would be highly appreciated.
NOTE: I can spend 5K to 6K INR per month for a reliable connection.

Apparently from stories broadband connections not as reliable in Assam and when there is a problem then not much is done about it. I think there is a user on the forum who lives in Guwahati and he uses BSNL EVDO and the speed and connection is supposed to be good, but I dont think it would be 8mbps.

Have a look at this thread about BSNL EVDO download speed.