Cryptsy tends to keep coins on the exchange even when they go through a few weeks of low volume. Other exchanges quickly get rid of any coin with temporary low volume so it's a good idea to get on Cryptsy. It's also one of the oldest exchanges and people know it's not likely to shut down.

there are about 22000 coins on bittrex....minus the whale who withdrawed his 4000 coins...So there is not much for any exchange....