I doubt you to be a real trader. A real trader would know where to trade and not a question like this. There is nothing called "best" market. You have check out the popular ones and see for yourself which one is suiting your needs. That is what is mattering here. Someone can like a certain exchange due to some personal reason while you may not like it for another reason.

Cryptopia was hacked. You should learn your lesson not to store funds on exchanges or keep orders open for long periods in case a hack happened.