I was prefer poloniex because was my best palform but when some one hack my acount and withdraw all my money i leave then i was go to bitrix but they also make new rules about active acount so now my question is what is best palform u can deposit ur money in it without scare and why ?
Please no link
I think Binance is a very nice exchange platform. It's well laid out and there's good coins to be trading on there. Bittrex has had some issues in the past, especially with some shady business with shutting down some accounts, holding funds, etc.
Regardless of what exchange you use, I suggest not leaving your investments in those exchanges. Anything can happen to the exchange, but if you still have ownership of the currency in a wallet, then you can easily go to a different exchange if the one that you were using just disappears.