Don't worry, Binance have stop-limit option too + low fees. Bittrex is way too expensive and sometimes your deposited money is nowhere. And you have to wait till it miraculously appears after days/weeks. So I wouldn't recommend it.

The whole Tether/Bitfinex thing is shady for sure but it's quite annoying how the media presents the story. Leaving out exact dates and casually adding it after other newspapers copy-pasted it and people are freaked out. For sure they would like to cause a bigger panic here.