bitcointalk with escrow, poloniex, kraken in order for me.
I only suggest bittrex and poloniex, I feel they are the most excellent trading place. I always played in bittrex, because I always get a trading profit there
My problem with bittrex is that, they let any coin get listed if you pay them something like 3BTC or so (thats what I learnt from other threads).
So lot of blatant scam coins get listed there.