I currently testing this SodaStream machine I find interesting with an ease of use without need much; the downside for now that I see is that the gas does not last long, the 2nd day too more bubbles against soda in supermarkets, I gasifies with 3 bubbles yet what is the maximum. otherwise perfect design, the color black is great, no need for electrical connection is top that. a lot of noise during gasification. 4 already taste the flavors: Lemonade, aggrumes, blood oranges and grapefruit. by cons with some perfumes the trick when you use perfume (but only for some perfumes do not all do), even if we really poured gently into the bottle after gasification and well beyond it.