There are lot of datacard providers out there. MTS Mblaze, Tata photon, Tata Docomo and BSNL are those who provides unlimited plans

1. Mblaze @ 999 rs 3.1 Mbps till 12 gb. 144kbs there after
2. Photon @ 1000 rs 3.1 Mbps till 5 gb 128kbs there after
3. Photon @ 1200 rs 3.1 Mbps till 10 gb 128kbs there after
4. Docomo @ 1000 rs 3.6 Mbps till 5gb. 128kbs there after
5. Docomo @ 1250 rs 3.6 Mbps till 10gb. 128kbs there after
6. Docomo @ 1275 rs 7.2 Mbps till 5gb. 128kbs there after
7. Docomo @ 1500 rs 7.2 Mbps till 10gb. 128kbs there after
8. BSNL EVDO @ 750 3.1 Mbps. no idea about any data size capse
9. BSNL 3g again no idea on details.

Any details on #8 and #9?
From others I prefer #1. Mblaze because of its price to data size to speed ratio.
But what about its coverage?