I agree on the "depends on strain" sentiment. But I also have to add that some growers use flavor enhancing additives, such as AN Sweet Leaf... Strains grown with such additives will have a very sweet, heavy flavor.
When I use the reg's in my PD I get sort of a mild citrus taste as if you were to bite into an orange peel and then it finished off with just a hint of mint. And it probably does depend on the strain.