i think bitfinex is the best, you can try this exchange, this exchange is very good and big volume
To the best of my knowledge it's almost impossible to withdraw fiat from bitfinex at the moment. There are USA based banks that act as intermediaries for wire transfers who are blocking withdrawals from bitfinex. There hasn't been any update from bitfinex about the problem in over two months so I assume fiat withdrawals are still unavailable to most customers.
https://www.bitfinex.com/posts/203May 12, 2017
As noted in our prior announcement, US correspondent banks continue to block international wires. USD, however, continues to flow domestically in Taiwan and other channels have been slowly ramping up as evidenced by the price spreads narrowing between Bitfinex and other exchanges. Unfortunately, the solutions available to us at the moment are limited to specific customer profiles in certain jurisdictions, though we are working tirelessly to expand our portfolio of deposit and withdrawal options (including support for other fiat currencies) to meet the needs of our global customer base. If and when a customer qualifies for one of these channels, we will reach out to the customer. There is no need to inquire by means of a support ticket.
We have, however, moved the majority of our funds out of Taiwan and the “one-time” withdrawal solution discussed in the prior announcement is coming online. Unfortunately, due to the cumbersome nature of the settlement procedure, we are processing these requests in descending order of size as we learn how to handle the process more efficiently. For the time being, we will only process requests above $50,000 in size.