If you are interested in waves only then go to coinmarketcap ( https://coinmarketcap.com/currencies/waves/#markets ) and check which place would you like from the list there.

From that list for waves I would recommend bittrex and livecoin.
...Somehow I don't see it would be listed on poloniex on the coinmarketcap list, but it would be my choice number one... even after they removed trollbox