Calling all Opinions: Sodastream

Yesterday, I read a post on CNN's Eatocracy Blog on how one person kicked their Diet Coke addiction by replacing diet Coke with home-made seltzer made with the SodaStream machine.  The last time I was at my local kitchen goods store, the sales clerk there hit me with such a whopping sales pitch for the SodaStream that I assumed she was getting some sort of kickback.  Seriously, she was foaming at the mouth, with apparent love for the SodaStream machine.

Do you have a SodaStream machine?  Is it worth the hype?  I am calling for all knowledgable opinions - post or email me at LilyOnTheLam@gmail.com.

Thanks!