I have recently switched to
Airtel Xstream, 100Mbps plan. So far so good, I believe if the connection is handled by airtel upto the last mile then they give a very decent connection and stability, good peering, with likes from singtel, Telstra and NTT, sometimes even level3 and hurricane electric. There's minimum
router hops and latencies are good too, getting full speeds to my servers in ams and Nuremberg.
Using the zte modem over the dragon path one(they only had these two) chose zte as it came with four ports, so far so good, no issues my internet is kept on 24x7.
One thing is, I'm still unable to find out how to check data usage.