I trust Poloniex already for a while and I can say with my heart that I fully trust them and that I can recommend them to you guys because there is not wrong with their platform and services.
Why are you so much obsessed with them ? Agree,poloniex is great but the hackers and their staff can turn their necks around anytime.You know how ruthless they can get ? Bitfinex is a nice evidence.My point is,don't reply too much on exchange wallets.