Tried Alliance today, right after I had Horde for the second time. I gotta say, Horde really isn't THAT bad, but the aftertaste sucks at first. However, once you get to mid-bottle, you get acclimated to the taste, and it starts to taste good. Alliance is better though, not by much.
It kind of sucked though, because Dew isn't a very good drink to consume in the Florida summer heat, so my stomach felt really shitty while I drank them, but I didn't care because they tasted excellent.