For Diet Coke fans Sodastream is better. If you are addicted to High Fructose corn syrup and 10x much salt then folks will stick with Coke. My point is that Soda is expanding rapidly and getting the hard core soda drinkers. Coke has a problem and will only get worse with time. KO is dead money or you will loose money. Not easy to expand when you are loosing your at home customers at such a rapid clip. I also think that MNST and Red bull have a problem since the soda energy drink is pennies on the dollar in terms of cost.
"10x much salt"? One 8oz serving of plain soy milk has 150mg of sodium. One 12oz serving of Coke has 45mg of sodium. Based on your comment, Coke would be better for you.
I'm sorry but you're an embarrassingly poor salesperson. With promotors like you, Sodastream has no chance. You didn't even need to mention the #1 complaint about it, which is the outrageous cost and hassle of replacing the carbonation cartridges. Analysts who have studied the cost savings concluded that the machine doesn't break even on cane sugar syrup until you reach your 360th serving, and that's without the added costs of replacement bottles and cylinders.
I don't know what it is that you're addicted to but I suggest you try to sell it somewhere else.