This is definitely one to check out. We don't drink soda a whole lot around here, but this would be a perfect gift for at least two family members we have who drink soda A LOT. I love all the different flavors they have too (although they don't have my favorite - grapefruit). The cran-raspberry looks the most delicious to me.
I highly encourage you to check out the Not So Perfect Housewife and see her cute video of the Sodastream in action.