I'm tempted to say that these drinks are the equivalent of Catholic mortification for the Hebrew set, a sort of liquid hair shirt for those what have it coming, but that would be an exaggeration. A slight exaggeration.
Rather than being good or bad these are just blah, the cola especially. The cola isn't very fizzy, it isn't very sweet and it isn't very cola-esque. It ain't much at all. It's a bit like they bought the cola soda kit and added half as much syrup as they should've.
The Half & Half tastes nothing like milk, I should joke, but I won't. It's much better than the cola, which isn't saying much. In all honesty I could drink the Half & Half if hard pressed, it wouldn't be the most onerous task set before me in an average day. Lemony and etc it fails to offend.
Why do these sodas exist? Is a mild soda some Jewish ideal? Do their dietary restrictions caution against to much carbonation lest you be plagued by The Lord? I dunno, they are an inscrutable people.