I had the 30 litre still before this 70 litre one, so knew what to expect. It's basically the same, but with a bigger container. It's nice to have all new bits as after 2 1/2 years some of the tap connectors were getting worn and I was looking for spares. I used a 100 litre barrel of water to feed the pump on the 30 litre still. I needed to up this to 200 litre as it will get hot before the process is finished. Doing my first trial run I was using pans of cold water to keep the condenser cool towards the end. I'll find out if 200 litre is enough on the next batch,
The instruction manual lists a few projects. I'm just distilling alcohol from excess wine material. I don't know how it does on those other jobs.
If I had to suggest an improvement, the cooling water (hot) pipe goes soft when hot and reduces flow. A spring cil around the pipe of angle piece might support it better, (or else a loop of wire hanging from the ceiling) but these things are manageable. If you use big barrels of water like me, you will need moretubing than in the box, but it's easy enough to buy.