In my opinion, Freedom 800 Combo plan (with 100 local calls free) is best plan for heavy downloaders right now.
In this plan
1. Download speed from 2300hrs to 0800hrs is 2 mbps
2. Download speed from 0800hrs am to 2300hrs is 512 kbps
Now the best part, If you got this plan, PM me to know something special about this plan.
(pujaari , is it now OK?)
So let's check why I am saying this plan as Cheapest.
In Ideal conditions
1. Assume you are getting exact speed, that MTNL is advertising i.e. for 599 UL plan - 512kbps, for 999 UL - 1024 kbps, for 1899 UL plan - 2048 kbps, and for Freedom 800 plan - 512kbps for 08:00 am to 11:00 pm and 2048kbps for 11:00 pm to 08:00 am.
2. Assume you download 24x7 without break for a 30 days month.
Now for 599 plan you will download = 512kbps => 512x60x60 => 1843200kilo bits per hour => 1843200/8 => 230400 kilo bytes per hour => 23040x24x30 => 165888000 kilo bytes per month => 165888000/1024 => 162000 mega Bytes per month i.e. 162000/599 =270.45 mega Bytes per Rupees you spent.
For Rs. 999 plan you will download = 1024kbps => 1024x60x60x24x30/8 => 331776000 kilo Bytes per month => 331776000/1024 => 324000 mega Bytes per month i.e. 324000/999 = 324.32 mega Bytes per Rupees you spent.
For Rs. 1899 plan you will download 648000 mega Bytes per month i.e. 648000/1899 = 341.23 mega Bytes per Rupees you spent.
For Rs. 3499 plan you will download 1296000 mega Bytes per month i.e. 129000/3499 = 370.39 mega Bytes per Rupees you spent.
For Rs 800 Freedom plan, you will download 512kbps from 08:00 am to 11:00 pm => 512x60x60x15x30/8 = 103680000 kilo Bytes per month => 103680000/1024 = 101250 mega Bytes per month.
and 2040kbps from 11:00 pm to 08:00 am => 2048x60x60x9x30/8 => 248832000 kilo Bytes per month => 248832000/1024 => 243000 mega Bytes per month
Total Download in one month = 243000 mega Bytes + 101250 mega Bytes = 344250 mega Bytes per month i.e 430.31 mega Bytes per Rupees you spent
So it is clear that you will get high downloadable volume for your money spent in Freedom 800 plan even there is not speed hike or anything else.
In this plan
1. Download speed from 2300hrs to 0800hrs is 2 mbps
2. Download speed from 0800hrs am to 2300hrs is 512 kbps
Now the best part, If you got this plan, PM me to know something special about this plan.
(pujaari , is it now OK?)
So let's check why I am saying this plan as Cheapest.
In Ideal conditions
1. Assume you are getting exact speed, that MTNL is advertising i.e. for 599 UL plan - 512kbps, for 999 UL - 1024 kbps, for 1899 UL plan - 2048 kbps, and for Freedom 800 plan - 512kbps for 08:00 am to 11:00 pm and 2048kbps for 11:00 pm to 08:00 am.
2. Assume you download 24x7 without break for a 30 days month.
Now for 599 plan you will download = 512kbps => 512x60x60 => 1843200kilo bits per hour => 1843200/8 => 230400 kilo bytes per hour => 23040x24x30 => 165888000 kilo bytes per month => 165888000/1024 => 162000 mega Bytes per month i.e. 162000/599 =270.45 mega Bytes per Rupees you spent.
For Rs. 999 plan you will download = 1024kbps => 1024x60x60x24x30/8 => 331776000 kilo Bytes per month => 331776000/1024 => 324000 mega Bytes per month i.e. 324000/999 = 324.32 mega Bytes per Rupees you spent.
For Rs. 1899 plan you will download 648000 mega Bytes per month i.e. 648000/1899 = 341.23 mega Bytes per Rupees you spent.
For Rs. 3499 plan you will download 1296000 mega Bytes per month i.e. 129000/3499 = 370.39 mega Bytes per Rupees you spent.
For Rs 800 Freedom plan, you will download 512kbps from 08:00 am to 11:00 pm => 512x60x60x15x30/8 = 103680000 kilo Bytes per month => 103680000/1024 = 101250 mega Bytes per month.
and 2040kbps from 11:00 pm to 08:00 am => 2048x60x60x9x30/8 => 248832000 kilo Bytes per month => 248832000/1024 => 243000 mega Bytes per month
Total Download in one month = 243000 mega Bytes + 101250 mega Bytes = 344250 mega Bytes per month i.e 430.31 mega Bytes per Rupees you spent
So it is clear that you will get high downloadable volume for your money spent in Freedom 800 plan even there is not speed hike or anything else.