A couple of weeks ago i opened an account with poloniex for i want to start trading but i have read that they are having some problem. So i did not continue to transfer funds to them.

Then i research and find bittrex as the next option, so a few days ago i opened an account with bittrex and got verified as well. I just need to transfer fund to start trading. Now bittrex is encountering problem and disabling account and suspending withdrawal.

My question is, what is the next best exchange to do my trading?