Now I've ordered a set of new bottles. These look at first glance look the same, but they are not. The old bottles were the slightly heavier weight (about 147g) than the new bottle (130g). But they were suitable for the dishwasher. From this concept it has probably passed again, because in the new bottle is specially a warning stripes that the bottles are not dishwasher safe and should not be rinsed with hot water. For this reason I never pour the concentrate directly after bubbling into the bottle, but only in a large glass top and then the sparkling water. So the bottle remains largely clean.
Otherwise, do their job as usual. Had me only other bottles of Sodastream bought in a shop with the name Universal with bayonet and screw cap, but but then had to find that this did not fit with my old SodaClub Cool device. Therefore, I was glad to find here today on Amazon.
Conclusion: I'm currently happy with the bottles. Unfortunately, not dishwasher safe and the lid were apparently not changed, so I am afraid that they will break down again with time.
Addendum: In these bottles, the lid is broken again after two years of use. Hairline cracks emanating from the lid center and escapes through the bubble. Meanwhile, I think it's a general production error or a planned obsolescence. The bottles have actually more than a year shelf life period. But I regret to deduct two stars.