Kind of, but rather than carbonising a whole bottle, you just put a glass in it and it dispenses a glass worth of the ready mixed drink. My kids use our sodastream a lot and there would be a lot less cleanup with this (overfilled bottles and/or spilt sticky concentrate!)The Ninja Slushi looks ace! I'll add it to the list of things that I don't have kitchen space for.
The Thirsti is just a soda stream in a posh frock isn't it?