Not much value, in my opinion.
Most of the calories in juice are sugars, and much of the nutrients are left in the fibrous materials that stay behind when a fruit is juiced.
And then when you make it “diet” by taking out the sugar, what additives have had to be put in to keep it tasting similar.
My feelings aren’t specific to Ocean Spray. I’m not a big fan of juice because of the glycemic load.