The filter cartridges seem to run out way too quickly. There are only two of us but they never last 3 weeks. Makes it very expensive to run. 

Maybe our older version was serving us poor quality water but the amber light comes on SO fast with this one that you feel under great pressure with it. It's very "insistent" as well flashing red six times when you've had it almost no time. 

When it first arrived I liked the thumb-lifting lid but already it's losing its rigidity and not quite so easy to operate. 

Our previous version had rubber feet which was a great feature. This one doesn't. I miss them.

I wish it was easy to test the water as there is no problem with less than clear tea even when the red light is hounding me. 
Don't buy this if you are easily stressed!