From New York City, Dr. Brown's Black Cherry Soda is incomparable if there's yesterday's brisket being served slightly warmed on good Rye with plain old yellow mustard. That's real Brooklyn.
Last best drinks I like are some Boylan's flavors and Stewart's Key Lime Soda if it's chilled so cold as to be on the brink of frozen on a hot summer's day.
Have you ever tried Red Rock Cola? It’s an old brand from Atlanta. It’s available in glass bottles at Food City supermarkets. I tried it last year, and was shocked at how much I liked it. Red Rock is pretty strong, like a fountain coke that’s heavy on the syrup. It also has a bit more of a vanilla taste, but very subtle.
The only problem is that it’s significantly more expensive than Coca-Cola, and the taste isn’t necessarily even obviously better, just somewhat different than Coke...
Anyhow, something to try if you see it on the shelves somewhere and like to sample new sodas.