Amongst all the trading sites and trading exchanges, I think of bittrex to be the best place and the reason behind it is very much obvious. Bittrex trading exchange is the only trading exchange which is being used at almost all the places in the world and that there are so many people wont trusts this trading exchange because of the so many advantages which this exchange is giving to them.
I can't agree with you that Bittrex is one of the best cryptocurrency exchanges, although this exchange was one of the ones I started my acquaintance with cryptocurrency from. I left this exchange when they forcibly closed all open orders that the exchange thought were outdated.