Speed totally depend on distance
Number of users
Direcation of modem
And for me ac2766 and prithvi is doing good job ac2766>=prithvi
But sierra is best
But yes u r right it is a gamble
U can do one thing
Go to bsnl and discusse about sierra
If they guarantee u
Then u can purchase
Number of users
Direcation of modem
And for me ac2766 and prithvi is doing good job ac2766>=prithvi
But sierra is best
But yes u r right it is a gamble
U can do one thing
Go to bsnl and discusse about sierra
If they guarantee u
Then u can purchase