I can not specifically say about trading on the exchanges listed by you, but my buying and selling experience at HitBtc and Idax left a positive impression.  About Latoken heard from many users and reviews are mostly negative.  My trading experience with this exchange is usually sad.  I made a deposit of tokens and, as it turned out later, below the minimum deposit level of these tokens.  Later I decided to buy tokens and add balance to the trade.  But from the support of the exchange I heard the following.  They, referring to the rules of their exchange, stated to me that the tokens were lost and, like, we can do nothing to help.  Conclusion, carefully read the rules.