D16 have released their Roland TR-606 clone called Nithonat. I love all the D16 drum machines because they sound fairly close to the original hardware they emulate and also have terrific internal sequencers. My favorite feature is the random function. It is well worth reading the manual if you try/buy any of the D16 drum machines so you get the most out of them. Here is a set of samples I created from the new box:
