Yes, unfortunately. Felt empty after 5 bottles. Have you found a solution?

We have the same problem. The cylinder is empty much faster (after 1 week instead of 4 weeks) and you can always feel CO2 gas coming out when you turn the knob.
We don't have a solution yet, but we're not very happy.....

Yes.

No, not after 10 bottles, but compared to the Sodastream device, a cylinder lasts significantly less time.