Long had BSNL broadband. Their Unlimited was truly unlimited then. Now theirUnlimited starts nagging me all the time for topups, interrupting my work because my 1 GB limitexhausts within 2 days. Dont ask me how, I really dont know. And their free email refuses to delete email, especially the SPAM. Line problems from time to time but their service is still good.
As against this, ACT is cheaper - 40 GB limit Unlimited(oxymoron - yeah I know it means slower speeds after limit but still.And all the ISPs use that terminology). On the other hand, Ive had them blocking sites(dont tell the Government, one of the sites was theirs!). I know its them because I can go back with BSNL or Photon and access it. In all honesty, it also feels faster though rated speeds are the same for both. My wife signed up for this recently for her tablet but we wifi it. So cheaper, faster, not used long enough to attest reliability.
Tata Photon I got as a standby once when BSNL was down for a fortnight some years ago. It is slow and painful but its a dongle which I can carry wherever I go, especially out of the city(I dont do that often but its useful when I do).
So which is the best? If I had to use only one, I think Id still go to BSNL. I dont have to log on everyday(ACT insists, though its a wired Broadband connection). I dont have it blocking websites. I dont use their email ID in any case. Only the nag pop-ups and the ultra-fast exhaustion of my limit are problems. Even after the limit, I have no problem using it for email and(some) Youtube but you will notice the speed difference if youve used ACT. I dont really include Photon because its only real use is for travel(for me). Or you can say Im so used to it(BSNL) that Im stuck in their mud:-)