I prefer using Bitfinex. I trust the security much moreso than Cryptsy. You don't have problems with deposits and withdrawals either. I recommend all Darkcoin community members to migrate to Bitfinex.
In 30 minutes I will remove the 0.01111 wall from Cryptsy, but the 20,000 DRK wall on BFX at 0.01111 will stay, arbitrage should keep things approx level but I'll leave the BTC available on Cryptsy for a while to see what happens and may put the wall back up or make large market buys if it gets too out of balance.