The sounds are all top notch analog goodness. The kick is a bit on the weak side, but it sounds nice if it is distorted or its internal circuitry is modified. The snare is excellent and quite snappy. Adding pitch, noise level, and decay controls to the snare makes it very versatile. It can then be used as a third tom sound if all of the noise is removed. The high hats are superb.. very hissy. They sound similar to an 808's hats, but they have their own character. If you put both an open and closed hat on the same beat, you get a different, third HH sound. The cymbal is the worst sound available, but it does have its uses at times. Try putting it on each quarter note and adjusting the volume so you can just barely hear it. This can add a nice touch to your patterns. The tom toms are great too. Very tribal and electronic sounding. The accent is also capable of adding a good amount of expression and feeling to the patterns. The 606 can also sound extremely robotic as well.

Lots of great music has been made w/ the 606 over the years. Its very suitable for acid house, electro, techno, and other forms of music. Check out Autechre's Incunabula album, some Aphex Twin & Polygon Window, and Plastikman to hear the 606 in action. I rate it a 5 for its affordability, portability, modability, great analog sounds, and coolness factor. That being said I would not pay anything over $200 for a 606. A fair price is about $150.