The Paulaner Hefe-Weiss has long been one of my favorites, but I was also pleasantly surprised by the Licher Weizen. Kostrizter is a classic Swarzbier (Black Beer), but be sure to take note of the "Best By" date before you purchase. Konig Pilsener is a great beer for the Panama heat.
Beers from elsewhere around the world can be found too: Grolsch (Netherlands), Asahi (Japan), Czechvar (Czech Republic), Mythos (Greece), Presidente (Dominican Republican), plus various brews from places less known for their beer, such as Argentina and Hong Kong.
The choices from the United States are surprisingly sparse. Sam Adams Lager and Sierra Nevada Pale Ale are about it from the craft sector, though that is slowly starting to change.
Then, of course, we have what I call the faux imports, like Guinness, which is actually made here in Panama. Miller, Coors, and Budweiser are all widely available, but they're made in Panama as well. My "go-to" supermarket beer is Carlsberg, which for Panamanian import is made in Turkey. For 80 cents a can though I'll let that slide.
To make a long story short, there's no shortage of options in Panama. There is a noticeable absence of "American-style" craft beer, but in such an economically vibrant place as Panama, it won't be long before someone capitalizes on that opportunity.
Coming soon, the few, yet gradually increasing, options for locally-made cerveza artesanal in Panama.