BitFinex is a bitcoin to fiat exchange, a margin trading exchange, and a liquidity provider. The platform offers a number of features that expand the financial positions you can take - for example the ability to short Bitcoin via margin trading.
The exchange also offers a set of other cryptos apart from bitcoin such as Litecoin and Ethereum.
Deposits and withdrawals take place via the standard bank transfer means with fees of 0.1% and a minimum of $20. Bitcoin and Litecoin are free.
BitFinex takes security seriously and have moved from a hot wallet cold wallet set up to segregating customer funds where each user has access to their own wallet which they can review on the blockchain.
Bitfinex was hacked on 03 August 2016 and around 120,000 BTC were stolen.
Fee of 0.1% for most trades

HitBTC is an exchange for advanced traders that was founded in 2015. It has one of the largest selection of currency pairings and is a very good exchange for technical traders. Unfortunately, the trading platform has a variety of detailed features that can be intimidating to newer users that aren’t familiar with them.
They have a very good record on security and provide a variety of options to secure accounts, including two factor authentication.
Trading fees vary depending on whether the order is executed immediately or not (.01%-0.1%). There are also no fiat deposit or withdrawal options, making cashing in more difficult.
HitBTC offers a number of trading tools aimed at experienced technical traders. The hundreds of coin pairings and advanced charting tools, allow traders to better take advantage of market opportunities,