So far I'm liking the Drinkmate, but it'd be nice if their recipe site had actual recipes for things that weren't cocktails.
Like they do have "recipes" for non-cocktail drinks but they're all just like "put orange juice and honey into the drinkmate bottle and carbonate!" with no ratios or whatever.
also I tried making coffee soda but it still gets way too foamy. at least cleaning it up was a lot easier than on a sodastream.