Sodastream Love

For Christmas H and I invested (OK we used X-mas money from my Mom) in a new Sodastream machine. It is a counter top soda water maker. I drink a ton of flavored seltzer water; enough to keep a tribe of desert nomads hydrated for years. I also love new toys!!
Initially the marketing hype had me hooked: save money, save the environment, limitless flavors, convenient, healthier, etc. The other thing that had me hooked was the absence of negative reviews on the Web. It seemed like everyone who has ever used one of these things liked it, or at least didn't dislike it enough to type in a Web based hate screed.
After using it steadily for three months, I know why there is a dearth of negative reviews for Sodastream machines. The thing is one of the few gadgets that lives up to the hype.
We purchased the starter kit that came with the machine, a carbonator, 2 one liter bottles, and an assortment of flavors. We also ponied up for 2 extra bottles, a diet cola mix, a diet grapefruit mix, and a spare carbonator. In total, the cost was around $180.
The machine is a snap to set up. You simply pop the back off of the unit, screw the carbonator in, and reattach the back cover.
Making seltzer water is even easier. You fill up one of the bottles with water, screw it into the machine, and push the button a few times. After a few pumps the machine makes a loud farting noise. That means the water is fizzed. The directions say 3 farts make the water averagely fizzy and I would concur. You can tailor the fizzy to your own tastes.
To add flavors you simply pour the flavoring into the fizzed water. Adding the flavor before the fizzy is a messy proposition.
All of the flavors we tried (diet cola, diet grapefruit, berry essence, and lime essence) were good. The diet cola is more like RC cola than Coke or Pepsi. The grapefruit is like pink Fresca. The essences are just like any generic flavored seltzer you'd buy in the store. I can be pretty finicky and I haven't missed the brand name flavors (OK I do miss the Polar Vanilla occasionally).
In the three months that we've had the machine, H had purchased one liter of seltzer (it was on sale and a flavor I'm fond of). She doesn't miss lugging the bottles from the store or trudging the empties back to recycle. We always have seltzer in the house and often have soda as well.
We've used one of the carbonators (refills are $15), the diet grapefruit, and one of the essences. In total, I'm guessing we've gotten more than 100 liters of seltzer and soda out of the Sodastream. So the total cost per-liter is about $1.80 or less. Sure it is more than what seltzer costs at the store, but I'm guessing that before we burn through all of the starter kit supplies we'll have made 200 liters of seltzer which brings it under $1.00 a liter. Overtime the price per liter will keep going down. Add the convenience of not having to lug seltzer water home from the store, and knowing that the water used is filtered, and the cost is even better.
Our Sodastream is one of the few kitchen gadgets I've seen that are really useful!