Well alot of positive talk about btc-e, I have used use Coinbase in the past, i'll give them a try soon enough.

Coinbase is the worst exchange bitcoin site that i know
It takes many days to buy/sell bitcoin

True. But is it the only exchange with permit in the US.

I think, Circle is a fixed price shop. Not an exchange. In any case, does Circle allow to operate on their platform using Indian bank account ?