If you're a seasoned veteran looking for the best bang for your buck, Bitfinex is the go-to exchange for you. Unlike most exchanges that offer tons of pairs but are only liquid on the most known ones, Bitfinex offers the best of both worlds, with seemingly endless liquidity. Any issue you might have is swiftly taken care of by their support team who works around the clock to keep the engine running. Would recommend without a shadow of a doubt.