The past year I have used C-CEX and more late in the year Poloniex until... last week.
From what I have been reading, it is just not "the trend" anymore. People started complaining about Poloniex support tickets being left over for more than 3 months and is totally unacceptable.
Nowadays I have been using Bittrex as it looks like it is the most used option so far.
yes i heard the news too and my friends got this problem too. poloniex must fix this and maybe they need to recruit more people as support system team so the problem can be solve. but personally, i am not having any problem in poloniex while i am using bittrex and cryptopia too which is works best for me. kraken is my another favorite trading site and sometimes i visit to yobit, c-cex, coinexchange too.