I would suggest risking 599/- (the installation charge) and getting a reliance wireline broadband connection which is suitable according to your requirements.
You will see plenty of negative reviews about reliance in this forum. Yes. Their service sucks. But only in certain select locations.
As usual, everything boils down to how the concerned personnel are. For instance, the guy who comes and collects your installation amount check can ruin the entire experience for you by disappearing with the check. Or, the guy who installs the connection at your place - if he is having a bad day - he can mess up the entire thing. Oh and by the way, reliance is experiencing some gateway issues in certain parts of Bangalore since Saturday evening.
So, just jump in. Experience it first hand and then formulate your own opinions.