Bests & Worsts Reviews from Amazon

After purchasing multiple SodaStream Fizzi models, I confirmed these replacement bottles have a MAJOR FLAW in the manufacturing. The structure of the connection, which screws into the SodaStream unit, is different than the original CO2 canister that comes with the product. See picture, the replacement bottles have a much smaller dimple, which emits a fraction of the CO2 and does not bubble the water effectively. I cannot use these bottles. Worst even, the seller will not reply to my return request after several weeks of reapplying. At this point I cannot recommend this seller and beware they will take your money and they will not respond to your return request.