We recently got this in the office and LET ME TELL YOU, I cannot stop drinking it. I'd say its ALMOST as good as real lemonade.
I've been drinking this in the Duluth, MN area for about ten years -- it is excellent and doesn't taste like other diet pops -- it's very close to sugar pop. I think the real lemon juice that is added is part of the secret. When I travel I always look for it and I'm saddened to see that there are a lot of places where the 7-Up Distributors don't carry it. When comparing this to Diet 7-Up or Diet Sunkist Orange, they get about a 7, this gets a 10+. And Diet Coke or Diet Pepsi get a 4 or so. Diet A & W Root Beer gets a 7, Diet Sprite and other Diet pops are in the 5-6 range. But Diet Shasta Grapefruit, although about a 6 by itself, has grapefruit juice in it and when combined at 1 part to 3 parts Sunkist Diet Lemonade, comes out even better than just the Lemonade. I'd love it if someone would combine them like that, and then have them as a main diet pop option in all restaurants and vending machines. But if that never happens, almost as good is doing that same thing with Diet Sunkist Lemonade.