Which is the best SMS API in India?

I've written a blog summarising the top APIs to deliver SMS to Indian users - https://engagespot.co/blog/sms-api-providers-india

Which one do you prefer? Unlike the international route, we need to do additional procedures like DLT Header/Template approval. I'd love to know your opinion about the best sms apis in India, considering their price, response time, success rates etc.