We received the 30-cup 3 days ago. At first, TDS was in the tens out of the filter. Today, water inside the pitcher is above 60. It turned out that droplets were coming out of the filter past the first stage. After tightening the filter screw and holding the top portion over a glass, 00 TDS finally drips in. Hopefully this fixes it.
The lid was a problem from day 1 also. The two parts arrived disconnected, and are supposed to fit together by 2 plastic hinges. They are very hard to push together, and one piece broke off while trying to. Now, the remaining hinge can slide in sideways and the lid lays flat.
Overall, the water tastes good, and has the potential to filter down to 00 TDS, so I guess it does its job. It is compact, but fits a good amount of water. However, you can expect to have some problems that you have to fix yourself.
I started with a very positive predisposition (trying to get my family onto reusable bottles), but even I can't say this product is beyond improvement.