well, proper fruit juice has alot of sugar - natural sugar though.
my main issue with the ocean spray was the acidity.. it gave me and my friend and my neighbour chest pains. Apparently "acid indigestion". For us, the better alternative was not having it at all.
But if you really want an alternative.. Get a juicer and throw cranberries in.. Try other fruits too.
I don`t know much about juicers, but I saw an advert for the Jack LaLanne power juicer about 10 years ago and never forgot it. This is a similar advert.
Now, I am not tired or overweight or anything.. I am not a mug for adverts. But this looks like a good juicer. Good features.. Throw in a whole apple and it juices it, e.t.c