One of the best kits in it's class. I don't use the thumper, instead use the provided pipework to set the chiller off to the side. The recirculation pump is surprisingly useful. The silicon tubing is great, it just needs to be longer (to reach from the chiller on the counter to the cold water reservoir (bucket) on the floor. The chiller really works, but the return line should be larger. it wouldn't hurt for the chiller to hold more water either (at least taller side walls). Tuning the inlet and outlet valves to keep the coils covered but not overflow the pot was the most difficult part in all of this. Pay attention to washer orientation and don't tighten everything down until it is all assembled. The distilling instructions are very basic. I strongly suggest not relying on them for operation.