I just wanted to address the original question. Because all SodaStream machines are essentially the same, by this I mean they all fizz water to the exact same degree. The differences in prices are all down to exterior design and features.
For instance I have the newest top of the line model referred to as the SodaStream Power, see this review for in-depth details: www.slinkystudio.info/reviews/2015/9/15/sodastream-power-review
The reason I purchased this model is because it plugs into an electric output so it fizzes water to three different and most importantly exact levels by the press of a button. It's not cheap at £149, but looks lovely in white. Also the newer flavours within the UK are ridden from aspartame and many other bad ingredients. They taste lovely and I like a light fizz, which this machine does without me needing to guess or get it wrong.
I hope this is helpful.
Bay123 Wed 30-Sep-15 23:40:46
Pamish Wed 01-Jul-15 17:36:46
Teetime Thu 25-Jun-15 11:18:18
grrrranny Thu 25-Jun-15 11:13:43
sprite66 Thu 25-Jun-15 06:43:12
janerowena Mon 22-Jun-15 23:14:32
numberplease Mon 22-Jun-15 22:45:48
tanith Mon 22-Jun-15 21:14:13
tanith Mon 22-Jun-15 21:13:47
janerowena Mon 22-Jun-15 20:37:35
loopylou Mon 22-Jun-15 20:30:07
janerowena Mon 22-Jun-15 20:23:03
sprite66 Mon 22-Jun-15 19:34:37
tanith Mon 22-Jun-15 16:32:07
sprite66 Mon 22-Jun-15 15:43:55