A rumor says hitbtc may be broke, so I avoid this website, but the liqui was just hacked by hackers and it is dangerous too, so I think you should choose by yourself, I prefer liqui.
Hitbtc is a scam exchange that is stealing deposits. Bittrex is doing the same. I trade only on Binance, because it is most secure and reliable exchange now days.
Bittrex stole deposits? I don't think so, I have used bittrex for 3 years, and it is reliable, withdrawal is instant. Binance sometimes auto-sell people's tokens, who knows? I like polo, binance and bittrex. I hope stox will be listing there.