I am waiting now 11 days for Poloniex. With same documents on Bittrex took me 5 days of waiting.
Bittrex taking just five days of waiting is pretty much a very decent achievement. There are people waiting for weeks to hear anything back from Bittrex regarding their verification request, and in some extreme cases it takes even longer. I don't know how Bittrex is prioritizing their verification requests, but something is definitely wrong when one person needs to wait a few weeks, and the other just needs five days to get things done. I some times even think that they are prioritizing verification requests based on the location, which is a pretty bad way of doing business. It would basically mean that people from less wealthy economies have a lower priority than those who come from Western Europe for example. Mind telling where you come from?