A new $100 SodaStream model has one noticeable improvement - CNET
Amazon.com: Sodastream Source 2 Pack Original White Carbonating Reusable Water Bottles 1 Liter BPA-Free Fits Only - Play, Source, Power, Spirit and Fizzi Soda Makers : Home & Kitchen
SodaStream Orange & Green 1/2 Liter Carbonating Bottles - Shop Water Filters at H-E-B
SodaStream 0.5L Slim Dishwasher Safe Bottles Twin Pack - White