Best WiMAX Providers In India

I've been hearing few good and bad reviews about the WiMAX services being offered in India. It looks like Tata and Reliance are the big players and there are also few small players like Tikona. Does anyone have recommendations about the best wimax provider in India? I'd like to have a judgment based on following -

1. Customer Service.
2. Unlimited Data Plans.
3. Pricing.
4. Connectivity