Gosling's Ginger beer is "okay", but it's certainly not my preferred brand.
First of all, it's made with high fructose corn syrup (HFCS), not cane sugar, so I personally prefer Regatta in cans, Barritt's in bottles, Fever Tree, and Fentiman's. Those are all made with cane sugar.
I even spoke with someone last year from the Embassy of Bermuda, and they wanted to order Gosling's ginger beer, but when I told them I had Barritt's, they said, "Oh! We prefer Barritt's!" I should note, though, that Barritt's in cans is also made with HFCS, but it still tastes better than Gosling's.
Other than the sweetener issue, Gosling's GB just doesn't have great ginger "snap" or drive to it. It just sort-of "sits" there.
Oh, great - now I'm thirsty for a D&S