I have been using airtel broadband from past one year after dropping the shitty BSNL connection.They took 2 days for installation.Speed is constant and might exceeds the speed cap depending upon the host server your downloading from.
Customtakeouter service is good, they attend within 24 hrs of complaint.Now airtel has released unlimited plans @ upto 30 GB @ 4mbps. wat else do you want.?
1000 a-a mins free on landline.I stay in jp nagar, Bangalore..might be the service coverage is best here.
I recommend airtel broadband