I agree that Bittrex is very reliable service!
I have been trading for nearly a year now, and I have contacted the support team and devs few times, asking questions, and I always got the answers, which was great. Also transactions are simple and fast. Not that many people as on Poloniex helped "small fish" to get profits too, and not to be killed by whales.
Another thing I like about Bittrex is its simple front page / display. It is so simple, and unchanged for a while now, so people can react fast, and without any complicated bullshit.
I don't know about the new Exchange you offered here, but I hope Bittrex will stay that way as it is now.... And no hacker will hack them.