i like kraken, there is leverage there and other features, bitfinex also seems good, but there was an hacking attempt in the past, the one that is still somehow safe is only kraken to me
Indeed, kraken is quite good when it comes to their services yeah go for this exchange platform, But in bitfinex I doubt, as we all know before it has a big controversial issues. And the damage that it gave is not a joke to their investors.