We had for years a Sodastream with plastic bottles, then switched to a glass bottle.
Glass bottles I find more hygienic, plastic bottles are me (although declared BPA-free) a little suspect.
The bubbler with plastic bottles I purchased has presented (the works today still!) And a black SodaStrteam Crystal.
In this package a glass bottle was included, which still had the old lock, in which after about a year of synthetic material which is crumbly.
After about 2 3/4 years to the bubbling water leaked "everywhere", which meant that the lower protective container larger floods and tried to prevent the glass bottle was ultimately half empty. Carbon dioxide was then unfortunately almost always not in the water bottle.
A repair would not possible (Lt. information of the electric market, where I bought the unit) - a pity!
But glass bottles I still find good, which are from the old device still at home, so a new Crystal (times alternatively - for design reasons) in white and purchases here at Amazon.
In mid-October 2014, the unit received. The original bottle with CO2 was quickly empty (I think faster than usual).
Now the end of December is the third bottle arrived and already the part bubbles no longer correct to.
It bubbles during bubbling and dripping after opening. At the upper part / cover with the fuse or the safety lever water exits.
That's why I'm not satisfied, I want a device with glass bottles, high reliability and durability, in this brand I have not yet found, unfortunately.
