Sorry, Donald, I don't have any suggestions. I suppose my post functions more as a way to bump your thread than anything else. I just wanted to say that I'm interested in possible answers to your question too. I missed out on Welch's Essence Sparkling Grape, sad to say. I think it would've been just my thing, but at least now I won't experience the pain of goodbye.
Growing up, Welch's grape juice was my favorite. I don't drink much juice nowadays, just a few times a year. It tastes too sweet to me now, and I'm sensitive to sugar rushes that aren't balanced by fiber. When I have Welch's now, I dilute it with water to cut the sweetness and lower the calories. That option probably wouldn't be worth it for you though if you enjoy the taste as is.
Not juice, but frozen grapes are a snack you might like.
Good luck in the grape juice quest!