This tumbler composter was definitely a good product to replace my old non-spinning compost bin.  This appears to create useable compost much faster as it allows the material to be mixed more thoroughly by its spinning action.  However, once you fill this composter more than half way with material, it becomes extremely difficult to spin.  The weight of the material deforms the barrel to the point where it rubs on the base platform.  I believe the manufacturer can correct this by incorporating larger rollers or by making the barrel out of thicker plastic.