My wife has one of these. We were very excited when it arrived. Everything started out good, but quickly went down hill. The pods are the problem. After about two fills they start tasting bad, really bad. You are lucky to get three fills before the pod has to be tossed. Also, be warned that if you purchase refill pods in the single pack, they do not come with o rings. We found this out the hard way when we purchased 10 from one vendor and 15 from another. I contacted Yihi about getting some o rings, but was told the device does not use o rings.
It feels like this device was rushed to market.
Before this my wife was using a cheap lil Ghostick pod system, which is no loner available. The Ghostick was better in all regards that matter.