Poloniex have Margin Trading and Lending There is good security and decent volume and orderbook depth for the majority of its trading pairs. Poloniex likewise has an inbuilt wallet to store all the Cryptocurrencies No tension exchange. Poloniex have advance trading tools like dozens of technical indicators. They have robust API for that.They have a clod storage for your money what ever you have for better saftey. They check activity regularly to avoid spam. See full review